[Python-checkins] Fix typo in TypeVar docstring (#8142)

[Ivan Levkivskyi]

https://github.com/python/cpython/commit/86bfed372b81b8111a56a3311d537566d5df7f61
commit: 86bfed372b81b8111a56a3311d537566d5df7f61
branch: master
author: João D. Ferreira <jotomicron at gmail.com>
committer: Ivan Levkivskyi <levkivskyi at gmail.com>
date: 2018-07-07T16:41:20+01:00
summary:

Fix typo in TypeVar docstring (#8142)

"can be used do declare" → "can be used to declare"

files:
M Lib/typing.py

diff --git a/Lib/typing.py b/Lib/typing.py
index a95eb2e184a0..48992633ac34 100644
--- a/Lib/typing.py
+++ b/Lib/typing.py
@@ -509,7 +509,7 @@ def longest(x: A, y: A) -> A:
     At runtime, isinstance(x, T) and issubclass(C, T) will raise TypeError.
 
     Type variables defined with covariant=True or contravariant=True
-    can be used do declare covariant or contravariant generic types.
+    can be used to declare covariant or contravariant generic types.
     See PEP 484 for more details. By default generic types are invariant
     in all type variables.