Q:

Python left shift (sign issue)

In this example I'm obtaining a positive number, but I need an expression in Python that gives the same result as in Javascript. 
How can that negative result be obtained in Python?
Python 2.7
mv = 1732584193 << 5

Result:

mv = 55442694176

bin(mv) gives 0b1100111010001010010001100000001
Javascript
mv = 1732584193 << 5

Result: 

mv = -391880672

mv.toString(2) gives -10111010110111001111111100000

A:

You could use ctypes to do this:
>>> import ctypes
>>> mv = ctypes.c_int32(1732584193)
>>> mv.value <<= 5
>>> mv
c_int(-391880672)
>>> bin(mv.value)
'-0b10111010110111001111111100000'

