annotate env/lib/python3.7/site-packages/virtualenv/session.py @ 3:758bc20232e8 draft

"planemo upload commit 2a0fe2cc28b09e101d37293e53e82f61762262ec"
author shellac
date Thu, 14 May 2020 16:20:52 -0400
parents 26e78fe6e8c4
children
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1 from __future__ import absolute_import, unicode_literals
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2
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3 import json
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4 import logging
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5
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6 from virtualenv.util.six import ensure_text
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7
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8
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9 class Session(object):
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10 """Represents a virtual environment creation session"""
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11
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12 def __init__(self, verbosity, app_data, interpreter, creator, seeder, activators):
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13 self._verbosity = verbosity
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14 self._app_data = app_data
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15 self._interpreter = interpreter
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16 self._creator = creator
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17 self._seeder = seeder
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18 self._activators = activators
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19
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20 @property
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21 def verbosity(self):
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22 """The verbosity of the run"""
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23 return self._verbosity
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24
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25 @property
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26 def interpreter(self):
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27 """Create a virtual environment based on this reference interpreter"""
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28 return self._interpreter
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29
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30 @property
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31 def creator(self):
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32 """The creator used to build the virtual environment (must be compatible with the interpreter)"""
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33 return self._creator
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34
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35 @property
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36 def seeder(self):
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37 """The mechanism used to provide the seed packages (pip, setuptools, wheel)"""
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38 return self._seeder
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39
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40 @property
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41 def activators(self):
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42 """Activators used to generate activations scripts"""
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43 return self._activators
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44
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45 def run(self):
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46 self._create()
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47 self._seed()
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48 self._activate()
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49 self.creator.pyenv_cfg.write()
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50
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51 def _create(self):
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52 logging.info("create virtual environment via %s", ensure_text(str(self.creator)))
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53 self.creator.run()
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54 logging.debug(_DEBUG_MARKER)
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55 logging.debug("%s", _Debug(self.creator))
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56
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57 def _seed(self):
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58 if self.seeder is not None and self.seeder.enabled:
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59 logging.info("add seed packages via %s", self.seeder)
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60 self.seeder.run(self.creator)
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61
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62 def _activate(self):
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63 if self.activators:
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64 logging.info(
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65 "add activators for %s", ", ".join(type(i).__name__.replace("Activator", "") for i in self.activators)
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66 )
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67 for activator in self.activators:
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68 activator.generate(self.creator)
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69
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70 def __enter__(self):
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71 return self
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72
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73 def __exit__(self, exc_type, exc_val, exc_tb):
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74 self._app_data.close()
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75
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76
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77 _DEBUG_MARKER = "=" * 30 + " target debug " + "=" * 30
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78
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79
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80 class _Debug(object):
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81 """lazily populate debug"""
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82
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83 def __init__(self, creator):
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84 self.creator = creator
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85
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86 def __unicode__(self):
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87 return ensure_text(repr(self))
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88
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89 def __repr__(self):
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90 return json.dumps(self.creator.debug, indent=2)