What's the logical value of "string" in Python?
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Track title: CC C Schuberts Piano Sonata No 13 D
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Chapters
00:00 Question
00:41 Accepted answer (Score 13)
01:29 Answer 2 (Score 7)
02:19 Answer 3 (Score 2)
02:38 Answer 4 (Score 2)
02:55 Thank you
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Full question
https://stackoverflow.com/questions/4531...
Answer 1 links:
[this page for a full list of values of all types that evaluate to ]: http://docs.python.org/library/stdtypes....
Answer 3 links:
http://docs.python.org/library/stdtypes....
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https://meta.stackexchange.com/help/lice...
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Tags
#python #string #casting #boolean
#avk47
ACCEPTED ANSWER
Score 13
Any non empty string in Python (and most other languages) is true as are all non-zero numbers and non-empty lists, dictionaries, sets and tuples.1
A nicer way to do what you want is:
name = input("what is your name?")
if name in ("Kamran", "Samaneh"):
print("That is a nice name")
else:
print("You have a boring name ;)")
This creates a tuple containing the names that you want and performs a membership test.
1 As delnan points out in the comments, this applies to all well written collections. That is, if you implement a custom collection class, make sure that it is false when it's empty.
ANSWER 2
Score 2
http://docs.python.org/library/stdtypes.html#truth-value-testing
"....All other values are considered true — so objects of many types are always true."
ANSWER 3
Score 2
In Python an empty string is considered False, True otherwise.
You could use the in operator:
if name in ("Kamran","Samaneh"):
print("That is a nice name")
else:
print("You have a boring name ;)")
ANSWER 4
Score 0
A non-empty string is True, yes. An empty one is False. This is super-handy.