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Is it considered bad style to assign values to variables like this?
x = "foobar" or None y = some_variable or None In the above example, x gets the value 'foobar'.
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The base case, x or y returns x if bool(x) evaluates True , else it evaluates y , (see the docs for reference). Therefore, a series of or expressions has the effect of returning the first item that evaluates True , or the last item.
The assignment operator, denoted by the “=” symbol, is the operator that is used to assign values to variables in Python. The line x=1 takes the known value, 1, and assigns that value to the variable with name “x”. After executing this line, this number will be stored into this variable.
1 Answer. Assignment operators: In Python, = is a simple assignment operator to assign values to variable. Let a = 5 and b = 10 assigns the value 5 to a and 10 to b these two assignment statement can also be given as a, b = 5, 10 that assigns the value 5 and 10 on the right to the variables a and b respectively.
|= on Booleans The Python |= operator when applied to two Boolean values A and B performs the logical OR operation A | B and assigns the result to the first operand A . As a result, operand A is False if both A and B are False and True otherwise. What is this?
No, it's a common practice. It's only considered bad style for expressions that are considerably longer than yours.
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The primary danger of doing something like this is the possibility that (in the second case) some_variable is False but not None (the integer 0, for instance) and you don't want to end up with y equal to None in that case.
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