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typeshed/README.md
2015-04-24 18:22:40 -05:00

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# typeshed
## About
Typeshed models function types for the Python standard library
and Python builtins.
This data can e.g. be used for static analysis, type checking or type inference.
## Format
Each Python module is represented by a `.py` "stub". This is a normal Python
file (i.e., it can be interpreted by Python 3), except all the methods are empty.
Python function annotations ([PEP 3107](https://www.python.org/dev/peps/pep-3107/))
are used to describe the types the function has.
See ([PEP 484](http://www.python.org/dev/peps/pep-0484/)) for the exact syntax
of the stub files.
## Example
The below is an excerpt from the types for the `datetime` module.
```
MAXYEAR = Undefined(int)
MINYEAR = Undefined(int)
__doc__ = Undefined(str)
__file__ = Undefined(str)
__name__ = Undefined(str)
__package__ = Undefined(None)
class date(object):
def __init__(self, year: int, month: int, day: int): pass
@classmethod
def fromtimestamp(cls, timestamp: int or float) -> date: pass
@classmethod
def fromordinal(cls, ordinal: int) -> date: pass
@classmethod
def today(self) -> date: pass
def ctime(self) -> str: pass
def weekday(self) -> int: pass
```