--- a/env/lib/python3.7/site-packages/urllib3/fields.py	Thu May 14 16:47:39 2020 -0400
+++ /dev/null	Thu Jan 01 00:00:00 1970 +0000
@@ -1,273 +0,0 @@
-from __future__ import absolute_import
-import email.utils
-import mimetypes
-import re
-
-from .packages import six
-
-
-def guess_content_type(filename, default="application/octet-stream"):
-    """
-    Guess the "Content-Type" of a file.
-
-    :param filename:
-        The filename to guess the "Content-Type" of using :mod:`mimetypes`.
-    :param default:
-        If no "Content-Type" can be guessed, default to `default`.
-    """
-    if filename:
-        return mimetypes.guess_type(filename)[0] or default
-    return default
-
-
-def format_header_param_rfc2231(name, value):
-    """
-    Helper function to format and quote a single header parameter using the
-    strategy defined in RFC 2231.
-
-    Particularly useful for header parameters which might contain
-    non-ASCII values, like file names. This follows RFC 2388 Section 4.4.
-
-    :param name:
-        The name of the parameter, a string expected to be ASCII only.
-    :param value:
-        The value of the parameter, provided as ``bytes`` or `str``.
-    :ret:
-        An RFC-2231-formatted unicode string.
-    """
-    if isinstance(value, six.binary_type):
-        value = value.decode("utf-8")
-
-    if not any(ch in value for ch in '"\\\r\n'):
-        result = u'%s="%s"' % (name, value)
-        try:
-            result.encode("ascii")
-        except (UnicodeEncodeError, UnicodeDecodeError):
-            pass
-        else:
-            return result
-
-    if six.PY2:  # Python 2:
-        value = value.encode("utf-8")
-
-    # encode_rfc2231 accepts an encoded string and returns an ascii-encoded
-    # string in Python 2 but accepts and returns unicode strings in Python 3
-    value = email.utils.encode_rfc2231(value, "utf-8")
-    value = "%s*=%s" % (name, value)
-
-    if six.PY2:  # Python 2:
-        value = value.decode("utf-8")
-
-    return value
-
-
-_HTML5_REPLACEMENTS = {
-    u"\u0022": u"%22",
-    # Replace "\" with "\\".
-    u"\u005C": u"\u005C\u005C",
-    u"\u005C": u"\u005C\u005C",
-}
-
-# All control characters from 0x00 to 0x1F *except* 0x1B.
-_HTML5_REPLACEMENTS.update(
-    {
-        six.unichr(cc): u"%{:02X}".format(cc)
-        for cc in range(0x00, 0x1F + 1)
-        if cc not in (0x1B,)
-    }
-)
-
-
-def _replace_multiple(value, needles_and_replacements):
-    def replacer(match):
-        return needles_and_replacements[match.group(0)]
-
-    pattern = re.compile(
-        r"|".join([re.escape(needle) for needle in needles_and_replacements.keys()])
-    )
-
-    result = pattern.sub(replacer, value)
-
-    return result
-
-
-def format_header_param_html5(name, value):
-    """
-    Helper function to format and quote a single header parameter using the
-    HTML5 strategy.
-
-    Particularly useful for header parameters which might contain
-    non-ASCII values, like file names. This follows the `HTML5 Working Draft
-    Section 4.10.22.7`_ and matches the behavior of curl and modern browsers.
-
-    .. _HTML5 Working Draft Section 4.10.22.7:
-        https://w3c.github.io/html/sec-forms.html#multipart-form-data
-
-    :param name:
-        The name of the parameter, a string expected to be ASCII only.
-    :param value:
-        The value of the parameter, provided as ``bytes`` or `str``.
-    :ret:
-        A unicode string, stripped of troublesome characters.
-    """
-    if isinstance(value, six.binary_type):
-        value = value.decode("utf-8")
-
-    value = _replace_multiple(value, _HTML5_REPLACEMENTS)
-
-    return u'%s="%s"' % (name, value)
-
-
-# For backwards-compatibility.
-format_header_param = format_header_param_html5
-
-
-class RequestField(object):
-    """
-    A data container for request body parameters.
-
-    :param name:
-        The name of this request field. Must be unicode.
-    :param data:
-        The data/value body.
-    :param filename:
-        An optional filename of the request field. Must be unicode.
-    :param headers:
-        An optional dict-like object of headers to initially use for the field.
-    :param header_formatter:
-        An optional callable that is used to encode and format the headers. By
-        default, this is :func:`format_header_param_html5`.
-    """
-
-    def __init__(
-        self,
-        name,
-        data,
-        filename=None,
-        headers=None,
-        header_formatter=format_header_param_html5,
-    ):
-        self._name = name
-        self._filename = filename
-        self.data = data
-        self.headers = {}
-        if headers:
-            self.headers = dict(headers)
-        self.header_formatter = header_formatter
-
-    @classmethod
-    def from_tuples(cls, fieldname, value, header_formatter=format_header_param_html5):
-        """
-        A :class:`~urllib3.fields.RequestField` factory from old-style tuple parameters.
-
-        Supports constructing :class:`~urllib3.fields.RequestField` from
-        parameter of key/value strings AND key/filetuple. A filetuple is a
-        (filename, data, MIME type) tuple where the MIME type is optional.
-        For example::
-
-            'foo': 'bar',
-            'fakefile': ('foofile.txt', 'contents of foofile'),
-            'realfile': ('barfile.txt', open('realfile').read()),
-            'typedfile': ('bazfile.bin', open('bazfile').read(), 'image/jpeg'),
-            'nonamefile': 'contents of nonamefile field',
-
-        Field names and filenames must be unicode.
-        """
-        if isinstance(value, tuple):
-            if len(value) == 3:
-                filename, data, content_type = value
-            else:
-                filename, data = value
-                content_type = guess_content_type(filename)
-        else:
-            filename = None
-            content_type = None
-            data = value
-
-        request_param = cls(
-            fieldname, data, filename=filename, header_formatter=header_formatter
-        )
-        request_param.make_multipart(content_type=content_type)
-
-        return request_param
-
-    def _render_part(self, name, value):
-        """
-        Overridable helper function to format a single header parameter. By
-        default, this calls ``self.header_formatter``.
-
-        :param name:
-            The name of the parameter, a string expected to be ASCII only.
-        :param value:
-            The value of the parameter, provided as a unicode string.
-        """
-
-        return self.header_formatter(name, value)
-
-    def _render_parts(self, header_parts):
-        """
-        Helper function to format and quote a single header.
-
-        Useful for single headers that are composed of multiple items. E.g.,
-        'Content-Disposition' fields.
-
-        :param header_parts:
-            A sequence of (k, v) tuples or a :class:`dict` of (k, v) to format
-            as `k1="v1"; k2="v2"; ...`.
-        """
-        parts = []
-        iterable = header_parts
-        if isinstance(header_parts, dict):
-            iterable = header_parts.items()
-
-        for name, value in iterable:
-            if value is not None:
-                parts.append(self._render_part(name, value))
-
-        return u"; ".join(parts)
-
-    def render_headers(self):
-        """
-        Renders the headers for this request field.
-        """
-        lines = []
-
-        sort_keys = ["Content-Disposition", "Content-Type", "Content-Location"]
-        for sort_key in sort_keys:
-            if self.headers.get(sort_key, False):
-                lines.append(u"%s: %s" % (sort_key, self.headers[sort_key]))
-
-        for header_name, header_value in self.headers.items():
-            if header_name not in sort_keys:
-                if header_value:
-                    lines.append(u"%s: %s" % (header_name, header_value))
-
-        lines.append(u"\r\n")
-        return u"\r\n".join(lines)
-
-    def make_multipart(
-        self, content_disposition=None, content_type=None, content_location=None
-    ):
-        """
-        Makes this request field into a multipart request field.
-
-        This method overrides "Content-Disposition", "Content-Type" and
-        "Content-Location" headers to the request parameter.
-
-        :param content_type:
-            The 'Content-Type' of the request body.
-        :param content_location:
-            The 'Content-Location' of the request body.
-
-        """
-        self.headers["Content-Disposition"] = content_disposition or u"form-data"
-        self.headers["Content-Disposition"] += u"; ".join(
-            [
-                u"",
-                self._render_parts(
-                    ((u"name", self._name), (u"filename", self._filename))
-                ),
-            ]
-        )
-        self.headers["Content-Type"] = content_type
-        self.headers["Content-Location"] = content_location