python assign in condition

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python assign in condition

Use break: while True: i = sys.stdin.read(1) if i == "-n": break # etc...,Python 3.8 will bring in PEP572. Abstract This is a proposal for creating a way to assign to variables within an expression using the notation NAME := expr. , Starting Python 3.8 , and the introduction of assignment expressions (PEP 572) ( := operator), it's now possible to capture the condition value ..., I don't think this is possible in Python, since what you're actually trying to do probably gets expanded to something like this: num1 = 20 if ..., Simplifying list comprehensions; Capturing condition values; Fork ... This is a proposal for creating a way to assign to variables within an ..., You basically have two options here. with option 1 as the following var1 = '[email protected]' if var1 == '[email protected]': var2 ..., You cannot use assignment in an expression. Assignment is itself a statement, and you cannot combine Python statements. This is an explicit ..., There is conditional assignment in Python 2.5 and later - the syntax is not very obvious hence it's ... x = true_value if condition else false_value.,In Python, assignment is a statement, not an expression, and can therefore not be used inside an arbitrary expression. This means that common C idioms like: while (line = readline(file)) ...do something with line... } if (match = search(target)) ...do s

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python assign in condition 相關參考資料
Assignment Condition in Python While Loop - Stack Overflow

Use break: while True: i = sys.stdin.read(1) if i == "-n": break # etc...

https://stackoverflow.com

Can we have assignment in a condition? - Stack Overflow

Python 3.8 will bring in PEP572. Abstract This is a proposal for creating a way to assign to variables within an expression using the notation NAME := expr.

https://stackoverflow.com

How to assign a variable in an IF condition, and then return it ...

Starting Python 3.8 , and the introduction of assignment expressions (PEP 572) ( := operator), it's now possible to capture the condition value ...

https://stackoverflow.com

One line if-condition-assignment - Stack Overflow

I don't think this is possible in Python, since what you're actually trying to do probably gets expanded to something like this: num1 = 20 if ...

https://stackoverflow.com

PEP 572 -- Assignment Expressions | Python.org

Simplifying list comprehensions; Capturing condition values; Fork ... This is a proposal for creating a way to assign to variables within an ...

https://www.python.org

Python - Assign value based on condition - Stack Overflow

You basically have two options here. with option 1 as the following var1 = '[email protected]' if var1 == '[email protected]': var2 ...

https://stackoverflow.com

Python Assign value to variable during condition in while Loop ...

You cannot use assignment in an expression. Assignment is itself a statement, and you cannot combine Python statements. This is an explicit ...

https://stackoverflow.com

Python conditional assignment operator - Stack Overflow

There is conditional assignment in Python 2.5 and later - the syntax is not very obvious hence it's ... x = true_value if condition else false_value.

https://stackoverflow.com

Why can't I use an assignment in an expression? - effbot.org

In Python, assignment is a statement, not an expression, and can therefore not be used inside an arbitrary expression. This means that common C idioms like: while (line = readline(file)) ...do someth...

http://effbot.org