python 3.xµÄifÓï¾ä
>>> x=-1
>>> if x>0:
print ('11')
>>> else:
SyntaxError: invalid syntax (<pyshell#20>, line 1)
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>>> x=int(input("Please enter an integer:"))
Please enter an integer:23
>>> if x<0:
x=0
print("zero")
elif x==0:
SyntaxError: invalid syntax (<pyshell#34>, line 4)
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