Unable to import modules from 'math' in Python

Question

I've hit this weird issue were I'm unable to import from the math module in Python. However importing the entire module works.

---------------------------------------------------------------------------
ImportError                               Traceback (most recent call last)
/Users/bdhammel/Documents/research_programming/analysis_routines/visar_analysis.py in <module>()
     16
     17 from core import scopes as cscopes
---> 18 from core import plot as cplot
     19 from core.plot import ImageData, IndexSelector
     20 from core.math import savitzky_golay

/Users/bdhammel/Documents/research_programming/core_diag/core/plot.py in <module>()
     10     sys.path.append(CORE_DIR)
     11
---> 12 from core import math as cmath
     13
     14 class ImageData(object):

/Users/bdhammel/Documents/research_programming/core_diag/core/math.py in <module>()
      3 import sys
      4 import math
----> 5 from math import factorial
      6 from scipy.integrate import cumtrapz
      7

ImportError: cannot import name factorial

My directory structure is something like this

Main file
    from math import factorial # works fine here
    import custom_module

custom_module
    import math # works fine
    from math import factorial # breaks

I have no idea why this could be. Any help would be appreciated.

I'm working inside of a virtual environment.

Answer 1

如果要在core.math内导入内置math ，请打开绝对导入，这样就不会得到core.math ：

from __future__ import absolute_import