why does my if statement function only assign my print message to the last key-value in my dictionar-CodePudding

favorite_languges = {
"John": "Python",
"Aisha": "C",
"Newton": "maths",
"Budon": "C  ",
}

# for loop to print all keys

for name in favorite_languges.keys():
    print(name.title())

# for loop to print message to all users in the friends list

friends = ['Budon', 'Aisha']
if name in friends:
    language = favorite_languges[name].title()
    print(f'\t{name.title()}, i see you love {language}')

I am trying to print the message print(f'\\t{name.title()}, i see you love {language}') to users who are in the friends list and also in the dictionary but its only assigns it to the last key-value in the dictionary

I tried to run it each line at a time but i don't seem to get the way out. I've been practicing for only 3 months

CodePudding user response：

You are not using a for loop for your second loop. So you need to add it. And there is one more thing: You should check whether a name is in the dictionary or not, otherwise you will get a KeyError for an unknown name.

favorite_languges = { "John": "Python", "Aisha": "C", "Newton": "maths", "Budon": "C  ", }

for name in favorite_languges.keys():
    print(name.title())

favorite_languges = { "John": "Python", "Aisha": "C", "Newton": "maths", "Budon": "C  ", }

for name in favorite_languges.keys():
    print(name.title())


friends = ['Budon', 'Aisha']
for name in friends:
    if name in favorite_languges:
        language = favorite_languges[name].title()
        print(f'\t{name.title()}, i see you love {language}')
    else:
        print(f"No information about {name}")

Expected output:

John
Aisha
Newton
Budon
John
Aisha
Newton
Budon
    Budon, i see you love C  
    Aisha, i see you love C

CodePudding user response：

It's possible that you're only running the if statement after the for loop has passed which means it'll always be at the last point in the array, try it like this:

favorite_languges = { "John": "Python", "Aisha": "C", "Newton": "maths", "Budon": "C  "}
friends = ['Budon', 'Aisha']
for name in favorite_languges.keys():
    print(name.title())
    if name in friends:
        language = favorite_languges[name].title()
        print(f'\t{name.title()}, i see you love {language}')