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Python Python Collections (Retired) Dictionaries Membership

Kit Kemper
Kit Kemper
4,305 Points

Confusing response in Python Collections> Dictionaries > Membership: Bummer! Where's `members()`?

I am using the following code in the challenge:

def members(my_dict, my_list): matched = 0 for keys in my_dict.keys(): if key in my_list: matched += 1 else: pass return matched

When checking my work, the response is "Bummer! Where's members()?" Clearly, I define the function and arguments in the first line of my code. Why am I getting this response?

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):
  matched = 0
  for keys in my_dict.keys():
    if key in my_list:
      matched += 1
    else:
      pass
  return matched

2 Answers

You're almost there. In your for loop you did:

for keys in my_dict.keys():
  if key in my_list:

Just change "for keys" to "for key" and it should work.

Kit Kemper
Kit Kemper
4,305 Points

Thanks, I thought that was strange, but it was what I gleaned from the Python docs. The feedback obviously didn't match the error which also sent me down a rabbit hole.