--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/env/lib/python3.7/site-packages/planemo/conda_verify/utils.py	Sat May 02 07:14:21 2020 -0400
@@ -0,0 +1,71 @@
+import collections
+import sys
+
+from planemo.conda_verify.const import (
+    DLL_TYPES,
+    MAGIC_HEADERS,
+)
+
+
+def get_object_type(data):
+    head = data[:4]
+    if head not in MAGIC_HEADERS:
+        return None
+    lookup = MAGIC_HEADERS.get(head)
+    if lookup == 'DLL':
+        pos = data.find('PE\0\0')
+        if pos < 0:
+            return "<no PE header found>"
+        i = ord(data[pos + 4]) + 256 * ord(data[pos + 5])
+        return "DLL " + DLL_TYPES.get(i)
+    elif lookup.startswith('MachO'):
+        return lookup
+    elif lookup == 'ELF':
+        return "ELF" + {'\x01': '32', '\x02': '64'}.get(data[4])
+
+
+def get_bad_seq(s):
+    for seq in ('--', '-.', '-_',
+                '.-', '..', '._',
+                '_-', '_.'):  # but '__' is fine
+        if seq in s:
+            return seq
+    return None
+
+
+def all_ascii(data, allow_CR=False):
+    newline = [10]  # LF
+    if allow_CR:
+        newline.append(13)  # CF
+    for c in data:
+        n = ord(c) if sys.version_info[0] == 2 else c
+        if not (n in newline or 32 <= n < 127):
+            return False
+    return True
+
+
+class memoized(object):
+    """Decorator. Caches a function's return value each time it is called.
+    If called later with the same arguments, the cached value is returned
+    (not reevaluated).
+    """
+    def __init__(self, func):
+        self.func = func
+        self.cache = {}
+
+    def __call__(self, *args):
+        if not isinstance(args, collections.Hashable):
+            # uncacheable. a list, for instance.
+            # better to not cache than blow up.
+            return self.func(*args)
+        if args in self.cache:
+            return self.cache[args]
+        else:
+            value = self.func(*args)
+            self.cache[args] = value
+            return value
+
+
+if __name__ == '__main__':
+    print(sys.version)
+    print(all_ascii(b'Hello\x00'), all_ascii(b"Hello World!"))