Hi, can anyone find my mistake

Question

i have a phonebookgiven as the following:

phoneBook = [{'first name': 'Sophia', 'last name': 'Thorarensen', 'number': '06508641036'},
{'first name': 'Emma', 'last name': 'Blöndal', 'number': '06504228512'},
{'first name': 'Olivia', 'last name': 'Thorarensen', 'number': '06501126965'},
{'first name': 'Ava', 'last name': 'Hansen', 'number': '06762858077'},
{'first name': 'Isabella', 'last name': 'Olsen', 'number': '06801324090'},
{'first name': 'Evelyn', 'last name': 'Bergmann', 'number': '06805592151'},
{'first name': 'Charlotte', 'last name': 'Andersen', 'number': '06762229010'},
{'first name': 'Liam', 'last name': 'Briem', 'number': '06767141082'},
{'first name': 'Oliver', 'last name': 'Briem', 'number': '06802647719'},
{'first name': 'Noah', 'last name': 'Thorlacius', 'number': '06805539375'},
{'first name': 'William', 'last name': 'Jensen', 'number': '06765392663'},
{'first name': 'James', 'last name': 'Hjaltalín', 'number': '06508393585'},
{'first name': 'Oliver', 'last name': 'Scheving', 'number': '06769395459'}]

and i want to write a method which should return a list with only the names which have a unique first name, this is my approach, but it doesn't work right:

def uniqueFirstName(listln):
foundByFirstname = listIn

for i in range(len(listIn)-1):

for j in range(len(listIn)-1):

if((listIn[j]['first name'] in listIn[i]['first name']) & (i != j) & (listIn[j]['first name'] in foundByFirstname)):

foundByFirstname.remove(listIn[j])

return foundByFirstname
uniqueFirstName(phoneBook)

Answer 1

What is `&`? The `and` keyword is used for logical AND.

Answer 2

wow thank you so much!