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Python logical operator or


Python logical operator or

By : Adriano San Martin
Date : November 17 2020, 11:58 AM
may help you . From the various comments, it looks like you rather want something like:
code :
if p is not None or s is not None:
    r = (p or ()) + (s or ())
    r = (() if p is None else p) + (() if s is None else s)


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Python's Logical Operator AND

Python's Logical Operator AND


By : burke
Date : March 29 2020, 07:55 AM
help you fix your problem Python Boolean operators return the last value evaluated, not True/False. The docs have a good explanation of this:
Advance Logical Operator in Python

Advance Logical Operator in Python


By : user3026366
Date : March 29 2020, 07:55 AM
this one helps. If you are thinking of trying to emulate JavaScript or other languages ternary operators, you have to do it something like this:
code :
print("even" if a%2 == 0 else "odd")
print(a%2 and 'odd' or 'even')
Python logical operator precedence

Python logical operator precedence


By : OmkarS
Date : March 29 2020, 07:55 AM
I think the issue was by ths following , Comparisons are executed before and, which in turn comes before or. You can look up the precedence of each operator in the expressions documentation.
So your expression is parsed as:
Logical operator in Python

Logical operator in Python


By : Xavante
Date : March 29 2020, 07:55 AM
hope this fix your issue This is from the logical short-cuts that many languages take. The and operator in this case appears in the low-level code as if it were:
code :
a = 2
b = 4
return b if a else a
if not a:
    return a
else:
    return b
Easier code in 8.5 K&R book, only logical operator instead bit operation and logical operator

Easier code in 8.5 K&R book, only logical operator instead bit operation and logical operator


By : Siva
Date : October 07 2020, 04:00 PM
like below fixes the issue The bits of the flag member are assigned more meanings than just _READ (01), _EOF (010, which is octal for 8), and _ERR (020, 16). There are also _WRITE (02) and _UNBUF (04).
Kernighan and Ritchie’s code, (fp->flag & (_READ | _EOF | _ERR )) != _READ, is true if and only if _READ is clear, _EOF is set, or _ERR is set.
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