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Michael Tsai – Blog – What comes in Python 3.8



Jake Edge (via Hacker News):

Out of it came a new operator, but it is often called "walrus
operator "because of its visual appearance. Using" : = "in a
if or while the statement allows to assign a value to a
variable while testing
the.

[…]

The F strings (or formatted strings) were added
into python 3.6 is quite useful, but the pythonists often found that
used them the same way in debug output. Then suggested Eric V. Smith
some extra syntax for f-strings to help with debug output.

[…]

Another change for 3.8 gives pure Python features the same options for
parameters that those implemented in C already have. PEP 570 ("Python
Positive Only Parameters ") introduces new syntax that can be used in
Function definitions of denote only position
arguments
parameters that cannot be transferred as keyword arguments.

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