Python typing: Difference between revisions
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Type annotations in python. | |||
= Example = | = Example = | ||
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</source> | </source> | ||
</blockquote><!-- Example --> | </blockquote><!-- Example --> | ||
= Common Types = | |||
<blockquote> | |||
== open file objects == | |||
<blockquote> | |||
<syntaxhighlight lang="python"> | |||
from typing import IO | |||
# either bytes/str | |||
def foo() -> IO: | |||
return open('foo.txt', 'r') | |||
def foo() -> IO[bytes]: | |||
return open('foo.txt', 'rb') | |||
def foo() -> IO[str]: | |||
return open('foo.txt', 'r') | |||
</syntaxhighlight> | |||
</blockquote><!-- open file objects --> | |||
</blockquote><!-- Common Types --> |
Revision as of 14:06, 31 July 2021
Type annotations in python.
Example
from typing import Dict, List, Tuple, Bool class Project: def add_user(user: User) -> Bool pass def set_active(status: Bool=False) -> Bool: pass def update_metadata(data: List[Dict]) -> List[Dict]: pass
Common Types
open file objects
from typing import IO # either bytes/str def foo() -> IO: return open('foo.txt', 'r') def foo() -> IO[bytes]: return open('foo.txt', 'rb') def foo() -> IO[str]: return open('foo.txt', 'r')