Merging PR_218 openai_rev package with new streamlit chat app

venv/lib/python3.9/site-packages/validators/domain.py

@@ -0,0 +1,54 @@
+import re
+
+from .utils import validator
+
+pattern = re.compile(
+    r'^(?:[a-zA-Z0-9]'  # First character of the domain
+    r'(?:[a-zA-Z0-9-_]{0,61}[A-Za-z0-9])?\.)'  # Sub domain + hostname
+    r'+[A-Za-z0-9][A-Za-z0-9-_]{0,61}'  # First 61 characters of the gTLD
+    r'[A-Za-z]$'  # Last character of the gTLD
+)
+
+
+def to_unicode(obj, charset='utf-8', errors='strict'):
+    if obj is None:
+        return None
+    if not isinstance(obj, bytes):
+        return str(obj)
+    return obj.decode(charset, errors)
+
+
+@validator
+def domain(value):
+    """
+    Return whether or not given value is a valid domain.
+
+    If the value is valid domain name this function returns ``True``, otherwise
+    :class:`~validators.utils.ValidationFailure`.
+
+    Examples::
+
+        >>> domain('example.com')
+        True
+
+        >>> domain('example.com/')
+        ValidationFailure(func=domain, ...)
+
+
+    Supports IDN domains as well::
+
+        >>> domain('xn----gtbspbbmkef.xn--p1ai')
+        True
+
+    .. versionadded:: 0.9
+
+    .. versionchanged:: 0.10
+
+        Added support for internationalized domain name (IDN) validation.
+
+    :param value: domain string to validate
+    """
+    try:
+        return pattern.match(to_unicode(value).encode('idna').decode('ascii'))
+    except (UnicodeError, AttributeError):
+        return False