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Python

Christopher Johnson
Christopher Johnson
12,829 Points
Posted by Christopher Johnson
Christopher Johnson
12,829 Points

String Formatting with Dictionaries

I am unsure of how 

st_list.append(st.format(**x))

works. Could someone explain? Thanks!

def string_factory(lid, st):
  st_list = []

  for x in lid:
    st_list.append(st.format(**x))

  return st_list

1 Answer

Kenneth Love
STAFF
Kenneth Love
Treehouse Guest Teacher
Kenneth Love
Kenneth Love
Treehouse Guest Teacher

st_list is a list, empty at the beginning of the function. lid is a list of dictionaries. Each dictionary has 1 or more keys with a value each. You're looping through the list and feeding each dictionary into st, the format-friendly string, so that the named placeholders in the string get filled in by the dictionary's keys and values.