为什么我的 for 循环无限期地运行并且在满足 if 条件时不会停止？

Question

I'm trying to read text from a file and using a loop to find a specific text from the file. The data in the file is listed vertically word by word. When I run the script, after it prints the last word in the file it repeats itself from the beginning indefinitely.

with open('dictionary.txt','r') as file:
    dictionary = file.read().strip()
for i in dictionary:
 print (dictionary)
 if( i == "ffff" ):
    break

Answer 1

first split the lines by "\n" then print(i) not print(dictionary) :

with open('dictionary.txt', 'r') as file:
    dictionary = file.read().strip().split("\n")
for i in dictionary:
    print(i)
    if i == "ffff":
        break

Answer 2

before, you should split the lines b/c it will loop into the string and check if the characters are ffff , and it won't be True

i will be a single character, so you should do first

dictionary = dictionary.split("\n")

BUT if your ffff is a line, if is a word separated with spaces you can do:

dictionary = dictionary.split(" ")