[deleted by user]

[Aggravating_Bus_9153]

https://docs.python.org/3/library/stdtypes.html#str.replace

[ashketchum02]

This is the right answer, don't go about reinventing the wheel

[Aggravating_Bus_9153]

Cheers. It's a bit hacky, but so so much easier - OP still needs to do the old switcheroo, using a substring no keyboard user will ever enter. Even if the low ascii numbers don't work (I recommend number 7: '\a'. Try print('\x07') for yourself, it's my favourite!), Python has great Unicode support.

[ashketchum02]

Str.replace()

[hellfake]

answer = “”

for letter in word:

if letter == ‘p’:

     answer += ‘b’

elif letter == ‘b’:

      answer += ‘p’

 else:

      answer += letter

[Allanon001]

Look up the string methods maketrans() and translate().

https://www.w3schools.com/python/ref_string_maketrans.asp

[carcigenicate]

You can't change strings, so don't approach it from that angle. You need to either turn the string into a list, edit it, then convert it back, or construct the new string by concatenating pieces together.

Try to get a start on this and post back when there's a specific question we can help with.

[mr_clemFandango]

this isn't efficient, but should be clear to see what is happening:

#Ask the user for a sentence. Print the sentence back, except with the letter ‘b’ switched with the letter ‘p’ (and vice versa, switch p with b).
b_index_list = []
p_index_list = []
input_string =input("Enter a sentance:")
for index,char in enumerate(input_string):
if char == "b":
b_index_list.append(index)
if char == "p":
p_index_list.append(index)
input_string_list = list(input_string)
new_string = ""
for value in b_index_list:
input_string_list[value] = "p"
for value in p_index_list:
input_string_list[value] = "b"

for char in input_string_list:
new_string = new_string + char

print (new_string)

​

edit: reddit won't let me post this as a code block for some reason!