Commits on Oct 1, 2018

1. [3.6] [3.7] bpo-33729: Fix issues with arguments parsing in hashlib. (p… …

   …ythonGH-8346) (pythonGH-8581)
   
   * help(hashlib) didn't work because of incorrect module name in blake2b and
     blake2s classes.
   * Constructors blake2*(), sha3_*(), shake_*() and keccak_*() incorrectly
     accepted keyword argument "string" for binary data, but documented as
     accepting the "data" keyword argument. Now this parameter is positional-only.
   * Keyword-only parameters in blake2b() and blake2s() were not documented as
     keyword-only.
   * Default value for some parameters of blake2b() and blake2s() was None,
     which is not acceptable value.
   * The length argument for shake_*.digest() was wrapped out to 32 bits.
   * The argument for shake_128.digest() and shake_128.hexdigest() was not
     positional-only as intended.
   * TypeError messages for incorrect arguments in all constructors sha3_*(),
     shake_*() and keccak_*() incorrectly referred to sha3_224.
   
   Also made the following enhancements:
   
   * More accurately specified input and result types for strings, bytes and
     bytes-like objects.
   * Unified positional parameter names for update() and constructors.
   * Improved formatting.
   (cherry picked from commit f1d36d8)
   
   Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>.
   (cherry picked from commit 47957da)
   
   Co-authored-by: Serhiy Storchaka <storchaka@gmail.com>

   

   serhiy-storchaka committed Oct 1, 2018
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