1 files changed, 52 insertions, 0 deletions

diff --git a/venv/lib/python3.9/site-packages/validators/iban.py b/venv/lib/python3.9/site-packages/validators/iban.py
new file mode 100644
index 00000000..7413d127
--- /dev/null
+++ b/venv/lib/python3.9/site-packages/validators/iban.py
@@ -0,0 +1,52 @@
+import re
+
+from .utils import validator
+
+regex = (
+    r'^[A-Z]{2}[0-9]{2}[A-Z0-9]{11,30}$'
+)
+pattern = re.compile(regex)
+
+
+def char_value(char):
+    """A=10, B=11, ..., Z=35
+    """
+    if char.isdigit():
+        return int(char)
+    else:
+        return 10 + ord(char) - ord('A')
+
+
+def modcheck(value):
+    """Check if the value string passes the mod97-test.
+    """
+    # move country code and check numbers to end
+    rearranged = value[4:] + value[:4]
+    # convert letters to numbers
+    converted = [char_value(char) for char in rearranged]
+    # interpret as integer
+    integerized = int(''.join([str(i) for i in converted]))
+    return (integerized % 97 == 1)
+
+
+@validator
+def iban(value):
+    """
+    Return whether or not given value is a valid IBAN code.
+
+    If the value is a valid IBAN this function returns ``True``, otherwise
+    :class:`~validators.utils.ValidationFailure`.
+
+    Examples::
+
+        >>> iban('DE29100500001061045672')
+        True
+
+        >>> iban('123456')
+        ValidationFailure(func=iban, ...)
+
+    .. versionadded:: 0.8
+
+    :param value: IBAN string to validate
+    """
+    return pattern.match(value) and modcheck(value)