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Python Python Collections (Retired) Dictionaries Membership

Posted by David Wright
David Wright
4,437 Points

counts.py

code shows my two attempts, both failed.

counts.py 
# You can check for dictionary membership using the
# "key in dict" syntax from lists.

### Example
# my_dict = {'apples': 1, 'bananas': 2, 'coconuts': 3}
# my_list = ['apples', 'coconuts', 'grapes', 'strawberries']
# members(my_dict, my_list) => 2

def members(my_dict, my_list):
  count = []
  for item in my_list and my_dict:
    count += 1
  return count

def members(my_dict, my_list):
  count = []
  for item in my_list:
    if item in my_dict:
      count += 1
  return count

1 Answer

Josh Keenan
Josh Keenan
20,315 Points
Josh Keenan
Josh Keenan
20,315 Points

Take a look at this thread, Chris explains how to tackle the challenge really well!

https://teamtreehouse.com/community/how-do-i-create-the-right-members-function