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gh-126543: Docs: change "bound type var" to "bounded" when used in the context of the 'bound' kw argument to TypeVar #126584

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Nov 11, 2024
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gh-126543: Docs: change "bound type var" to "bounded" when used in the context of the 'bound' kw argument to TypeVar #126584

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40efa4e
Change "bound type var" to "bounded" in docs
fofoni Nov 8, 2024
0297395
Rewording suggestions
fofoni Nov 8, 2024
fa0e3bd
Change "bound" as a noun to "upper bound"
fofoni Nov 8, 2024
673a71b
Note that "bounded" and "upper bound" refer to the same thing
fofoni Nov 8, 2024
daf3fe1
Typo
fofoni Nov 10, 2024
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14 changes: 7 additions & 7 deletions Doc/library/typing.rst
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Expand Up @@ -1726,10 +1726,10 @@ without the dedicated syntax, as documented below.
class Sequence[T]: # T is a TypeVar
...

This syntax can also be used to create bound and constrained type
This syntax can also be used to create bounded and constrained type
variables::

class StrSequence[S: str]: # S is a TypeVar bound to str
class StrSequence[S: str]: # S is a TypeVar bounded by str
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...


Expand Down Expand Up @@ -1763,8 +1763,8 @@ without the dedicated syntax, as documented below.
"""Add two strings or bytes objects together."""
return x + y

Note that type variables can be *bound*, *constrained*, or neither, but
cannot be both bound *and* constrained.
Note that type variables can be *bounded*, *constrained*, or neither, but
cannot be both bounded *and* constrained.

The variance of type variables is inferred by type checkers when they are created
through the :ref:`type parameter syntax <type-params>` or when
Expand All @@ -1774,8 +1774,8 @@ without the dedicated syntax, as documented below.
By default, manually created type variables are invariant.
See :pep:`484` and :pep:`695` for more details.

Bound type variables and constrained type variables have different
semantics in several important ways. Using a *bound* type variable means
Bounded type variables and constrained type variables have different
semantics in several important ways. Using a *bounded* type variable means
that the ``TypeVar`` will be solved using the most specific type possible::

x = print_capitalized('a string')
Expand All @@ -1789,7 +1789,7 @@ without the dedicated syntax, as documented below.

z = print_capitalized(45) # error: int is not a subtype of str

Type variables can be bound to concrete types, abstract types (ABCs or
Type variables can be bounded by concrete types, abstract types (ABCs or
protocols), and even unions of types::
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# Can be anything with an __abs__ method
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