ValueError: invalid literal for int() with base 10: ''

tl;dr

The error message ValueError: invalid literal for int() with base 10: ''. signals that the string provided to int wasn't able to be parsed properly as an integer. This is because (in the above case), the input was an empty string: ''.

In order to convert a string that represents a floating-point value to an integer, you must first convert it to a float using the float function. For example:

>>> int(float('55063.000000'))

This will return the integer 55063