Mercurial > repos > galaxy-australia > alphafold2
annotate validate_fasta.py @ 6:04e95886cf24 draft
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
author | galaxy-australia |
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date | Mon, 04 Apr 2022 01:46:22 +0000 |
parents | 6c92e000d684 |
children | eb085b3dbaf8 |
rev | line source |
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1
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
parents:
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1 """Validate input FASTA sequence.""" |
0
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
galaxy-australia
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2 |
1
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
parents:
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3 import re |
6
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
galaxy-australia
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4 import sys |
0
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
galaxy-australia
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5 import argparse |
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
galaxy-australia
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6 from typing import List, TextIO |
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
galaxy-australia
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7 |
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
galaxy-australia
parents:
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8 |
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
galaxy-australia
parents:
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9 class Fasta: |
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
galaxy-australia
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10 def __init__(self, header_str: str, seq_str: str): |
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
galaxy-australia
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11 self.header = header_str |
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
galaxy-australia
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12 self.aa_seq = seq_str |
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
galaxy-australia
parents:
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13 |
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
galaxy-australia
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14 |
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
galaxy-australia
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15 class FastaLoader: |
1
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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16 def __init__(self, fasta_path: str): |
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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17 """Initialize from FASTA file.""" |
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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18 self.fastas = [] |
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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19 self.load(fasta_path) |
0
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
galaxy-australia
parents:
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20 |
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
galaxy-australia
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21 def load(self, fasta_path: str): |
1
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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22 """Load bare or FASTA formatted sequence.""" |
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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23 with open(fasta_path, 'r') as f: |
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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24 self.content = f.read() |
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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25 |
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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26 if "__cn__" in self.content: |
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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27 # Pasted content with escaped characters |
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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28 self.newline = '__cn__' |
6
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
galaxy-australia
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29 self.read_caret = '__gt__' |
1
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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30 else: |
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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31 # Uploaded file with normal content |
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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32 self.newline = '\n' |
6
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
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33 self.read_caret = '>' |
1
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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34 |
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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35 self.lines = self.content.split(self.newline) |
6
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
galaxy-australia
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36 |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
galaxy-australia
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37 if not self.lines[0].startswith(self.read_caret): |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
galaxy-australia
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38 # Fasta is headless, load as single sequence |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
galaxy-australia
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39 self.update_fastas( |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
galaxy-australia
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40 '', ''.join(self.lines) |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
galaxy-australia
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41 ) |
1
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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42 |
0
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
galaxy-australia
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43 else: |
6
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
galaxy-australia
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44 header = None |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
galaxy-australia
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45 sequence = None |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
galaxy-australia
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46 for line in self.lines: |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
galaxy-australia
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47 if line.startswith(self.read_caret): |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
galaxy-australia
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48 if header: |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
galaxy-australia
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49 self.update_fastas(header, sequence) |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
galaxy-australia
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50 header = '>' + self.strip_header(line) |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
galaxy-australia
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51 sequence = '' |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
galaxy-australia
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52 else: |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
galaxy-australia
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53 sequence += line.strip('\n ') |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
galaxy-australia
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54 self.update_fastas(header, sequence) |
1
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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55 |
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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56 def strip_header(self, line): |
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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57 """Strip characters escaped with underscores from pasted text.""" |
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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58 return re.sub(r'\_\_.{2}\_\_', '', line).strip('>') |
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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59 |
0
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
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60 def update_fastas(self, header: str, sequence: str): |
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
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61 # if we have a sequence |
1
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
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62 if sequence: |
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7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
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63 # create generic header if not exists |
1
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
galaxy-australia
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64 if not header: |
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7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
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65 fasta_count = len(self.fastas) |
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
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66 header = f'>sequence_{fasta_count}' |
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
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67 |
1
6c92e000d684
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit a510e97ebd604a5e30b1f16e5031f62074f23e86"
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68 # Create new Fasta |
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"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
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69 self.fastas.append(Fasta(header, sequence)) |
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
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70 |
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
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71 |
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
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72 class FastaValidator: |
6
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"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
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73 def __init__( |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
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74 self, |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
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75 fasta_list: List[Fasta], |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
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76 min_length=None, |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
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77 max_length=None): |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
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78 self.min_length = min_length |
04e95886cf24
"planemo upload for repository https://github.com/usegalaxy-au/tools-au commit 724a7a389c878dded1c0332f3b6e507e0c4cd52a-dirty"
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79 self.max_length = max_length |
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"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
galaxy-australia
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80 self.fasta_list = fasta_list |
7ae9d78b06f5
"planemo upload for repository https://github.com/usegalaxy-au/galaxy-local-tools commit 7b79778448363aa8c9b14604337e81009e461bd2-dirty"
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81 self.iupac_characters = { |
1
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82 'A', 'B', 'C', 'D', 'E', 'F', 'G', |
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83 'H', 'I', 'K', 'L', 'M', 'N', 'P', |
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84 'Q', 'R', 'S', 'T', 'U', 'V', 'W', 'X', |
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85 'Y', 'Z', '-' |
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86 } |
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87 |
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88 def validate(self): |
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89 """performs fasta validation""" |
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90 self.validate_num_seqs() |
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91 self.validate_length() |
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92 self.validate_alphabet() |
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93 |
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94 # not checking for 'X' nucleotides at the moment. |
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95 # alphafold can throw an error if it doesn't like it. |
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96 # self.validate_x() |
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97 |
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98 def validate_num_seqs(self) -> None: |
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99 """Assert that only one sequence has been provided.""" |
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100 if len(self.fasta_list) > 1: |
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101 raise Exception( |
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102 'Error encountered validating fasta:' |
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103 f' More than 1 sequence detected ({len(self.fasta_list)}).' |
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104 ' Please use single fasta sequence as input.') |
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105 elif len(self.fasta_list) == 0: |
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106 raise Exception( |
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107 'Error encountered validating fasta:' |
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108 ' input file has no fasta sequences') |
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109 |
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110 def validate_length(self): |
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111 """Confirm whether sequence length is valid.""" |
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112 fasta = self.fasta_list[0] |
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113 if self.min_length: |
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114 if len(fasta.aa_seq) < self.min_length: |
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115 raise Exception( |
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116 'Error encountered validating fasta: Sequence too short' |
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117 f' ({len(fasta.aa_seq)}AA).' |
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118 f' Minimum length is {self.min_length}AA.') |
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119 if self.max_length: |
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120 if len(fasta.aa_seq) > self.max_length: |
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121 raise Exception( |
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122 'Error encountered validating fasta:' |
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123 f' Sequence too long ({len(fasta.aa_seq)}AA).' |
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124 f' Maximum length is {self.max_length}AA.') |
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125 |
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126 def validate_alphabet(self): |
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127 """ |
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128 Confirm whether the sequence conforms to IUPAC codes. |
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129 If not, report the offending character and its position. |
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130 """ |
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131 fasta = self.fasta_list[0] |
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132 for i, char in enumerate(fasta.aa_seq.upper()): |
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133 if char not in self.iupac_characters: |
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134 raise Exception( |
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135 'Error encountered validating fasta: Invalid amino acid' |
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136 f' found at pos {i}: "{char}"') |
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137 |
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138 def validate_x(self): |
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139 """Check for X bases.""" |
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140 fasta = self.fasta_list[0] |
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141 for i, char in enumerate(fasta.aa_seq.upper()): |
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142 if char == 'X': |
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143 raise Exception( |
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144 'Error encountered validating fasta: Unsupported AA code' |
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145 f' "X" found at pos {i}') |
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146 |
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147 |
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148 class FastaWriter: |
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149 def __init__(self) -> None: |
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150 self.line_wrap = 60 |
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151 |
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152 def write(self, fasta: Fasta): |
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153 header = fasta.header |
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154 seq = self.format_sequence(fasta.aa_seq) |
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155 sys.stdout.write(header + '\n') |
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156 sys.stdout.write(seq) |
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157 |
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158 def format_sequence(self, aa_seq: str): |
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159 formatted_seq = '' |
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160 for i in range(0, len(aa_seq), self.line_wrap): |
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161 formatted_seq += aa_seq[i: i + self.line_wrap] + '\n' |
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162 return formatted_seq |
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163 |
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164 |
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165 def main(): |
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166 # load fasta file |
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167 args = parse_args() |
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168 fas = FastaLoader(args.input) |
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169 |
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170 # validate |
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171 fv = FastaValidator( |
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172 fas.fastas, |
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173 min_length=args.min_length, |
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174 max_length=args.max_length, |
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175 ) |
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176 fv.validate() |
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177 |
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178 # write cleaned version |
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179 fw = FastaWriter() |
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180 fw.write(fas.fastas[0]) |
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181 |
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182 |
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183 def parse_args() -> argparse.Namespace: |
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184 parser = argparse.ArgumentParser() |
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185 parser.add_argument( |
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186 "input", |
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187 help="input fasta file", |
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188 type=str |
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189 ) |
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190 parser.add_argument( |
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191 "--min_length", |
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192 dest='min_length', |
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193 help="Minimum length of input protein sequence (AA)", |
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194 default=None, |
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195 type=int, |
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196 ) |
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197 parser.add_argument( |
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198 "--max_length", |
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199 dest='max_length', |
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200 help="Maximum length of input protein sequence (AA)", |
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201 default=None, |
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202 type=int, |
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203 ) |
0
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204 return parser.parse_args() |
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205 |
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206 |
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207 if __name__ == '__main__': |
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208 main() |