title: Finding, counting and replacing values in lists
body: <p>I am a new user, using python 2.7 with grasshopper. I have three lists (A,B,C) each with 8760 values ranging between 0 and 25000.
  For each list I want to do the following.
  For A to replace all the values "greater than 2000" with 2000.
  For B to find the percentage of values that are between 100 and 2000.
  For C to find the percentage of values greater than 300.
  By percentage I mean, 'x' percent of the values in the list are greater than 'n'.
  I could find such questions answered but only with somethting called numpy and panda which I don't know and can't use. Any help is greatly appreciated. Thank you.</p>