Explaine me what difference between this codeblocks and why 1st doesn`t do anything.(Need to create username using first and second name)
Question:
Why .lower and .replece didn`t do anything with names?
1st:
names = ["Joey Tribbiani", "Monica Geller", "Chandler Bing", "Phoebe Buffay"]
usernames = []
for name in names:
name.lower()
name.replace(' ', '_')
usernames.append(name)
print(usernames)
2nd:
names = ["Joey Tribbiani", "Monica Geller", "Chandler Bing", "Phoebe Buffay"]
usernames = []
for name in names:
usernames.append(name.lower().replace((' ', '_')))
print(usernames)
Answers:
In 1st, you need to "keep the changes" assigning the result to some variable, in your case, the same one:
names = ["Joey Tribbiani", "Monica Geller", "Chandler Bing", "Phoebe Buffay"]
usernames = []
for name in names:
name = name.lower()
name = name.replace(' ', '_')
usernames.append(name)
print(usernames)
In 2nd, you need to provide 2 arguments to replace (the old value and the new one), your tupple is giving just one:
names = ["Joey Tribbiani", "Monica Geller", "Chandler Bing", "Phoebe Buffay"]
usernames = []
for name in names:
usernames.append(name.lower().replace(' ', '_'))
print(usernames)
Why .lower and .replece didn`t do anything with names?
1st:
names = ["Joey Tribbiani", "Monica Geller", "Chandler Bing", "Phoebe Buffay"]
usernames = []
for name in names:
name.lower()
name.replace(' ', '_')
usernames.append(name)
print(usernames)
2nd:
names = ["Joey Tribbiani", "Monica Geller", "Chandler Bing", "Phoebe Buffay"]
usernames = []
for name in names:
usernames.append(name.lower().replace((' ', '_')))
print(usernames)
In 1st, you need to "keep the changes" assigning the result to some variable, in your case, the same one:
names = ["Joey Tribbiani", "Monica Geller", "Chandler Bing", "Phoebe Buffay"]
usernames = []
for name in names:
name = name.lower()
name = name.replace(' ', '_')
usernames.append(name)
print(usernames)
In 2nd, you need to provide 2 arguments to replace (the old value and the new one), your tupple is giving just one:
names = ["Joey Tribbiani", "Monica Geller", "Chandler Bing", "Phoebe Buffay"]
usernames = []
for name in names:
usernames.append(name.lower().replace(' ', '_'))
print(usernames)