Why would one use operator s in python when we have almost all of them available inline such as [/,*,-,+,<,>,...]?
When would we need to use these operator functions as opposed to the inline operators?
As an example of why you might like to be able to call an operator as a function, consider the following code:
if op == "+":
return num1 + num2
elif op == "-":
return num1 - num2
elif op == "*":
return num1 * num2
else:
raise ValueError(f"invalid operator {op}")
With operator
this can be written more easily as:
return {
"+": operator.add,
"-": operator.sub,
"*": operator.mul,
}[op](num1, num2)
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