--- a/env/lib/python3.7/site-packages/cachecontrol/filewrapper.py	Thu May 14 16:47:39 2020 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,78 +0,0 @@
-from io import BytesIO
-
-
-class CallbackFileWrapper(object):
-    """
-    Small wrapper around a fp object which will tee everything read into a
-    buffer, and when that file is closed it will execute a callback with the
-    contents of that buffer.
-
-    All attributes are proxied to the underlying file object.
-
-    This class uses members with a double underscore (__) leading prefix so as
-    not to accidentally shadow an attribute.
-    """
-
-    def __init__(self, fp, callback):
-        self.__buf = BytesIO()
-        self.__fp = fp
-        self.__callback = callback
-
-    def __getattr__(self, name):
-        # The vaguaries of garbage collection means that self.__fp is
-        # not always set.  By using __getattribute__ and the private
-        # name[0] allows looking up the attribute value and raising an
-        # AttributeError when it doesn't exist. This stop thigns from
-        # infinitely recursing calls to getattr in the case where
-        # self.__fp hasn't been set.
-        #
-        # [0] https://docs.python.org/2/reference/expressions.html#atom-identifiers
-        fp = self.__getattribute__('_CallbackFileWrapper__fp')
-        return getattr(fp, name)
-
-    def __is_fp_closed(self):
-        try:
-            return self.__fp.fp is None
-        except AttributeError:
-            pass
-
-        try:
-            return self.__fp.closed
-        except AttributeError:
-            pass
-
-        # We just don't cache it then.
-        # TODO: Add some logging here...
-        return False
-
-    def _close(self):
-        if self.__callback:
-            self.__callback(self.__buf.getvalue())
-
-        # We assign this to None here, because otherwise we can get into
-        # really tricky problems where the CPython interpreter dead locks
-        # because the callback is holding a reference to something which
-        # has a __del__ method. Setting this to None breaks the cycle
-        # and allows the garbage collector to do it's thing normally.
-        self.__callback = None
-
-    def read(self, amt=None):
-        data = self.__fp.read(amt)
-        self.__buf.write(data)
-        if self.__is_fp_closed():
-            self._close()
-
-        return data
-
-    def _safe_read(self, amt):
-        data = self.__fp._safe_read(amt)
-        if amt == 2 and data == b'\r\n':
-            # urllib executes this read to toss the CRLF at the end
-            # of the chunk.
-            return data
-
-        self.__buf.write(data)
-        if self.__is_fp_closed():
-            self._close()
-
-        return data