Probability Distribution Function : I have a set of raw data and I have to identify the distribution of that data. What is the easiest way to plot a probability distribution function? I have tried fitting it in normal distribution. 

But I am more curious to know which distribution does the data carry within itself ? 

I have no code to show my progress as I have failed to find any functions in python that will allow me to test the distribution of the dataset. I do not want to slice the data and force it to fit in may be normal or skew distribution. 

Is any way to determine the distribution of the dataset ? Any suggestion appreciated.

Is this any correct approach ? [Example][1]  
This is something close what I am looking for but again it fits the data into normal distribution. [Example][2]


  [1]: http://stackoverflow.com/questions/7062936/probability-distribution-function-in-python
  [2]: http://stackoverflow.com/questions/23251759/how-to-determine-what-is-the-probability-distribution-function-from-a-numpy-arra