not getting expected output >> H12 T16 P19 G18

Question

You have been asked to make a special book categorization program, which assigns each book a special code based on its title.
The code is equal to the first letter of the book, followed by the number of characters in the title.
For example, for the book "Harry Potter", the code would be: H12, as it contains 12 characters (including the space).

You are provided a books.txt file, which includes the book titles, each one written on a separate line.
Read the title one by one and output the code for each book on a separate line.

For example, if the books.txt file contains:
Some book
Another book

Your program should output:
S9
A12
https://code.sololearn.com/cR8EIkeKR3KB/?ref=app
https://code.sololearn.com/cR8EIkeKR3KB/?ref=app

Answer 1

Likhon Zamader ,

what you need to do is:

▪︎read each line from the file (already done!)
▪︎take each line in the for loop and do:
▪︎take the first character of this string (you can access it by its index)
▪︎take the string and get the length of it (there is a build-in function that can do that)
▪︎take the first letter and concatenate the length of the string to a new string (remember that the length is currently an integer, that has to be converted)
▪︎print out the new string inside the for loop

happy coding and good success!

Answer 2

what output do you expect? your code prints out each line in the file exactly how its coded. Try using previous lesson knowledge to deal with the strings

Answer 3

Thanks

Answer 4

Loathar ,

Why need this line :
line = line.replace('\n' , ' ')
if I don't write this line the output is:
H13
T17
P20
G18

Correct output:
H12
T16
P19
G18

Why increases by 1 if I don't write that line

Answer 5

because if you readline() from the file, the new line ending each of them (except the last one) is counted in string length ^^

alternatively, you could read the whole file at once and split("\n") the string: iterating over the array would return you each line without the ending "\n" ;)

Answer 6

file = open("/usercode/files/books.txt", "r")

lines=file.readlines()
for line in lines:
print(line[0]+str(len(line)-1))
# As it count \n element too.so to ignore it we have reduce the length by 1.
file.close()