Can some one explain below code

Question

name=input("Enter a Name: ")
i=0
temp_var = ""

while i<len(name):
if name[i] not in temp_var:
temp_var+=name[i]
print(f"{name[i]} : {name.count(name[i])}")

i=i+1

#OUT PUT
# Enter a Name: hello world
# h : 1
# e : 1
# l : 3
# o : 2
# : 1
# w : 1
# r : 1
# d : 1

not understood "not in" for "o" character condition I have learn if condition is true the will go to if block if not the will go outside how is counting 0 3 times if condition is not meeting

Answer 1

count will not increase. The function count() returns the frequency..
Ex: "aaabc".count('a') returns 3.
'a' is 3 times in string.
Check your temp_var is "helo wrd".

you are already find frequemcy of 'l'
by name.count('l') and adding 'l' to temp_var;
so need to print again. that's what 'l' not in temp_var do.
skips second 'l'.

Answer 2

'h' not in temp_var true, so adding to temp_var; printing char with its count.

'e' not in temp_var true, so adding to temp_var; printing char with its count.

'l' not in temp_var true, so adding to temp_var; printing char with its count.

'l' not in temp_var false, out of if block.
#it is in temp_var by previous iteration.

'o' not in temp_var true, so adding to temp_var; printing char with its count.

This is enough I think.. Repeated same next...
Hope it helps..

Answer 3

No it will not print when name[i] is 'l' in second time..
See the code with printing i index value . It skips repeated value indexes.

name=input("Enter a Name:\n ")
i=0
temp_var = ""

while i<len(name):
if name[i] not in temp_var:
temp_var+=name[i]
print(f"{i}: {name[i]} : {name.count(name[i])}")

i=i+1

edit: skips 3, 7, 9.

Answer 4

@Jayakrishna Thanks for quick help
can you explain me this

The 'l' not in temp_var false, out of if block.

means its go to i=i+1 then how the count will increase? which is mentioned in print function if will go outside the block the the print statement will not execute

Answer 5

Yes sir Understood but if the condition is not true / not meet for second 'i' cause its already in string then how it will count means how it will go to the print statement

Answer 6

Okay sir thanks for quick help 🙂 🙂 🙂

Answer 7

Hope it clear now...

You're welcome.

Answer 8

Hi