What is the meaning of the following statement in python:
x = variable_1 or 0
variable_1
is an object. What value does x
have above? And what is the type of x
?
Python 0 is an indicator of the format method that you need to be replaced by the format's first (index zero) parameter. It is used to execute a string formatting operation. The formatted string argument contains a literal text or replacement fields delimited by braces { }.
Python returns the first character of a string when either of these are used as index values. 0 and -0 are the same.
If variable_1
evaluates to False
, x is set to 0
, otherwise to variable_1
Think of it as
if variable_1: x = variable_1 else: x = 0
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