Is it possible to modify variables in if statements, loops, and function calls in Python like you can in C and Java?
Ex:
i=0
while((i+=1)<10): #invalid syntax
print(i)
If not why is that?
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thedeg123
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2Integers are immutable. – timgeb Oct 24 '18 at 16:42
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2These two examples are not the same. I doubt the first one is allowed in C and/orJava – DeepSpace Oct 24 '18 at 16:44
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And no, Python does not allow expressions as `if` conditions, only statements. – DeepSpace Oct 24 '18 at 16:44
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afaik `int y=x+=6` works fine in c land – Joran Beasley Oct 24 '18 at 16:47
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@JoranBeasley it probably does, but this is not what OP is asking – DeepSpace Oct 24 '18 at 16:48
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@DeepSpace the first example is allowed in Java I tried it before I posted. I know the second example is allowed in C. – thedeg123 Oct 24 '18 at 16:50
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1@DeepSpace https://repl.it/@JoranBeasley/MassiveNavyblueSpreadsheet – Joran Beasley Oct 24 '18 at 16:50
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1@JoranBeasley I stand corrected then :) But the answer to the actual question is still "no, neither is allowed in Python" – DeepSpace Oct 24 '18 at 16:51
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this[https://stackoverflow.com/a/15148557/1176331] could help you understand although you seem to have found the correct answer – Savitoj Cheema Oct 24 '18 at 17:04
1 Answers
1
as long as the datatype is mutable
def modified(data):
data['a'] = 5
x = {'b':7}
modified(x)
print(x)
def increment_a(data):
data['a'] += 1
return data['a']
x = {'a':1}
while increment_a(x) < 10:
print(x)
however strings and integers are immutable
Joran Beasley
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