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I have this simple python program. I ran it and it prints yes, when in fact I expect it to not print anything because 14 is not greater than 14.
I saw this related question, but it isn't very helpful.
#! /usr/bin/python import sys hours = "14" if (hours > 14): print "yes" What am I doing wrong?
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In Python an strings can be converted into a integer using the built-in int() function. The int() function takes in any python data type and converts it into a integer.
If you want to compare their string values, then you should convert the integer to string before comparing (i.e. using String. valueOf() method). If you compare as integer values, then 5 is less than "123". If you compare as string values, then 5 is greater than "123".
You can convert a numeric string into integer using Integer. parseInt(String) method, which returns an int type. And then comparison is same as 4 == 4 .
Python comparison operators can be used to compare strings in Python. These operators are: equal to ( == ), not equal to ( != ), greater than ( > ), less than ( < ), less than or equal to ( <= ), and greater than or equal to ( >= ).
Convert the string to an integer with int:
hours = int("14") if (hours > 14): print "yes" In CPython2, when comparing two non-numerical objects of different types, the comparison is performed by comparing the names of the types. Since 'int' < 'string', any int is less than any string.
In [79]: "14" > 14 Out[79]: True In [80]: 14 > 14 Out[80]: False This is a classic Python pitfall. In Python3 this wart has been corrected -- comparing non-numerical objects of different type raises a TypeError by default.
As explained in the docs:
CPython implementation detail: Objects of different types except numbers are ordered by their type names; objects of the same types that don’t support proper comparison are ordered by their address.
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I think the best way is to convert hours to an integer, by using int(hours) .
hours = "14" if int(hours) > 14: print("yes")``` If you love us? You can donate to us via Paypal or buy me a coffee so we can maintain and grow! Thank you!
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