In Python 3.x, use int instead of long.

From What’s New In Python 3.0, Integers:

• PEP 237: Essentially, long renamed to int. That is, there is only one built-in integral type, named int; but it behaves mostly like the old long type.

The long() function is no longer supported by Python 3 (no pun intended). It only has one built-in integral type, named int; but it behaves mostly like the old long type. So you just need to use int() built-in function in python-3.x.

Also for more information here are the complete list of changes on integer type in python-3.x:

• PEP 0237: Essentially, long renamed to int. That is, there is only one built-in integral type, named int; but it behaves mostly like the old long type.

• PEP 0238: An expression like 1/2 returns a float. Use 1//2 to get the truncating behavior. (The latter syntax has existed for years, at least since Python 2.2.)

• The sys.maxint constant was removed, since there is no longer a limit to the value of integers. However, sys.maxsize can be used as an integer larger than any practical list or string index. It conforms to the implementation’s “natural” integer size and is typically the same as sys.maxint in previous releases on the same platform (assuming the same build options).

• The repr() of a long integer doesn’t include the trailing L anymore, so code that unconditionally strips that character will chop off the last digit instead. (Use str() instead.)

• Octal literals are no longer of the form 0720; use 0o720 instead.