title: How to solve ImportError: cannot import name splitfn in python
body: <p>i have write code to calibrate camera in my calibrate.py file,but when i run that file it shows error like, ImportError: cannot import name splitfn ..so how to solve this?...i have run this file using this command:</p>
  
  <p><strong>sudo python calibrate.py image4.jpg calibration.yaml --debug-dir out</strong></p>
  
  <p>so is this right command to execute this script?if any changes then plz suggest me.. my captured image for calibration(which i have gave as input) and output(RMS,camera matrix,distortion coefficient)is stored in calibration.yaml file?i need to make this file or it is automatically created?</p>