--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/lib/python3.8/site-packages/pip/_vendor/pytoml/writer.py	Mon Jul 27 03:47:31 2020 -0400
@@ -0,0 +1,114 @@
+from __future__ import unicode_literals
+import io, datetime, math, string, sys
+
+from .utils import format_rfc3339
+
+try:
+    from pathlib import PurePath as _path_types
+except ImportError:
+    _path_types = ()
+
+
+if sys.version_info[0] == 3:
+    long = int
+    unicode = str
+
+
+def dumps(obj, sort_keys=False):
+    fout = io.StringIO()
+    dump(obj, fout, sort_keys=sort_keys)
+    return fout.getvalue()
+
+
+_escapes = {'\n': 'n', '\r': 'r', '\\': '\\', '\t': 't', '\b': 'b', '\f': 'f', '"': '"'}
+
+
+def _escape_string(s):
+    res = []
+    start = 0
+
+    def flush():
+        if start != i:
+            res.append(s[start:i])
+        return i + 1
+
+    i = 0
+    while i < len(s):
+        c = s[i]
+        if c in '"\\\n\r\t\b\f':
+            start = flush()
+            res.append('\\' + _escapes[c])
+        elif ord(c) < 0x20:
+            start = flush()
+            res.append('\\u%04x' % ord(c))
+        i += 1
+
+    flush()
+    return '"' + ''.join(res) + '"'
+
+
+_key_chars = string.digits + string.ascii_letters + '-_'
+def _escape_id(s):
+    if any(c not in _key_chars for c in s):
+        return _escape_string(s)
+    return s
+
+
+def _format_value(v):
+    if isinstance(v, bool):
+        return 'true' if v else 'false'
+    if isinstance(v, int) or isinstance(v, long):
+        return unicode(v)
+    if isinstance(v, float):
+        if math.isnan(v) or math.isinf(v):
+            raise ValueError("{0} is not a valid TOML value".format(v))
+        else:
+            return repr(v)
+    elif isinstance(v, unicode) or isinstance(v, bytes):
+        return _escape_string(v)
+    elif isinstance(v, datetime.datetime):
+        return format_rfc3339(v)
+    elif isinstance(v, list):
+        return '[{0}]'.format(', '.join(_format_value(obj) for obj in v))
+    elif isinstance(v, dict):
+        return '{{{0}}}'.format(', '.join('{} = {}'.format(_escape_id(k), _format_value(obj)) for k, obj in v.items()))
+    elif isinstance(v, _path_types):
+        return _escape_string(str(v))
+    else:
+        raise RuntimeError(v)
+
+
+def dump(obj, fout, sort_keys=False):
+    tables = [((), obj, False)]
+
+    while tables:
+        name, table, is_array = tables.pop()
+        if name:
+            section_name = '.'.join(_escape_id(c) for c in name)
+            if is_array:
+                fout.write('[[{0}]]\n'.format(section_name))
+            else:
+                fout.write('[{0}]\n'.format(section_name))
+
+        table_keys = sorted(table.keys()) if sort_keys else table.keys()
+        new_tables = []
+        has_kv = False
+        for k in table_keys:
+            v = table[k]
+            if isinstance(v, dict):
+                new_tables.append((name + (k,), v, False))
+            elif isinstance(v, list) and v and all(isinstance(o, dict) for o in v):
+                new_tables.extend((name + (k,), d, True) for d in v)
+            elif v is None:
+                # based on mojombo's comment: https://github.com/toml-lang/toml/issues/146#issuecomment-25019344
+                fout.write(
+                    '#{} = null  # To use: uncomment and replace null with value\n'.format(_escape_id(k)))
+                has_kv = True
+            else:
+                fout.write('{0} = {1}\n'.format(_escape_id(k), _format_value(v)))
+                has_kv = True
+
+        tables.extend(reversed(new_tables))
+
+        if (name or has_kv) and tables:
+            fout.write('\n')