Can someone explain why print (2 and 3) just prints "3"? [duplicate] - python

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Does Python support short-circuiting?
(3 answers)
How do "and" and "or" act with non-boolean values?
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What's the value of short-circuit of Python?
(4 answers)
Closed 5 years ago.
This is a common question I've seen, but really don't get the programming logic behind it. I'm sure it's a simple solution, but one that I have yet to understand.

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Can anyone explain the function of last line in the following code [duplicate]

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Understanding slicing
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Closed 4 months ago.
str_1= input("Enter:")
for i in range(len(str_1)+1):
print(str_1[:i])
It means get all the characters starting from the i'th position for every iteration

What are these re.search meta characters doing? Where is my address? Not fully understanding syntax and RB [duplicate]

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Python3 regex on bytes variable [duplicate]
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my_address = re.search(rb'\x80\xC9.{4}\x94\x12\x8A\x41\x08', bytes).start() + 5
Read the doc but I'm a bit confused.
My guess is
\x80\xC9\BYTE\BYTE\BYTE\BYTE\BYTE\x94\x12\x8A\x41\x08\BYTE\BYTE\BYTE\BYTE\BYTE\my_address\
Thanks

What is the python / numpy "~" operator [duplicate]

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I see this operator from time to time in different contexts. Typically, it is used in front of a numpy variable
For example:
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While loop only working for one condition [duplicate]

This question already has answers here:
How to test multiple variables for equality against a single value?
(31 answers)
How do "and" and "or" act with non-boolean values?
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Closed 5 years ago.
Im trying to validate the user's input so he/she only types in 'all' or 'sel' (not case sensitive). Might just be some syntax mistake im making.
choice=input('Type "all" or "sel": ')
choice=choice.lower()
while choice!=('sel' or 'all'):
choice=input('Invalid input. Try again: ')
choice=choice.lower()
This only works if I type in 'sel', but not 'all'.

python print error, math incorrect (1/10=0) [duplicate]

This question already has answers here:
Script printing all zeros [duplicate]
(2 answers)
Basic python arithmetic - division
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Closed 5 years ago.
when I startup python, I don't import anything and I just enter 1/10, it returns 0. Any idea how to fix this?

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