Adding a string in front of a string for each item in a list in python -

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I have a list of websites in a string and I was adding "http" to the front for the loop The first index was " Yes ", but when I return it, the list does not change.

My list of websites is "http" 

  for p: if p [0]! = "H": p = h + p else: On coming back n

When I return the list, it returns my original list and does not add "http". Can somebody help me out?

This list can also be done with the understanding: 

  N = [i for i.startswith ('h') 'i' for other 'i')

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