Patch by Liang-Bo Wang.

Patch by Liang-Bo Wang.

Patch by Liang-Bo Wang.

other write methods.

Patch by Jakub Stasiak.

Issue #25888

Patch by Sebastien Bourdeauducq (issue #26338)

Patch by Frederick Wagner (issue #26347)

Patch by Chris Angelico (issue #26221)

Patch by Vladimir Rutsky.

In practice, bytecode instruction arguments are unsigned. Update the assertion
to make it more explicit that argument must be greater or equal than 0.

Rewrite also the comment.

Initialize i variable if the string is non-ASCII.

Issue #26464: Fix str.translate() when string is ASCII and first replacements
removes character, but next replacement uses a non-ASCII character or a string
longer than 1 character. Regression introduced in Python 3.5.0.

when resulting prefix length is equal to maximal prefix length.
Based on patch by Xiang Zhang.

when resulting prefix length is equal to maximal prefix length.
Based on patch by Xiang Zhang.