如何在 python 中检查字符串是否包含特定字符

Question

I am new to python, but fairly experienced in programming. While learning python I was trying to create a simple function that would read words in from a text file (each line in the text file is a new word) and then check if the each word has the letter 'e' or not. The program should then count the amount of words that don't have the letter 'e' and use that amount to calculate the percentage of words that don't have an 'e' in the text file.

I am running into a problem where I'm very certain that my code is right, but after testing the output it is wrong. Please help!

Here is the code:

def has_n_e(w):
    hasE = False
    for c in w:
        if c == 'e':
            hasE = True
    return hasE

f = open("crossword.txt","r")
count = 0

for x in f:
    word = f.readline()
    res = has_n_e(word)
    if res == False:
        count = count + 1

iAns = (count/113809)*100 //113809 is the amount of words in the text file
print (count)
rAns = round(iAns,2)
sAns = str(rAns)
fAns = sAns + "%"
print(fAns)

Answer 1

Here is the code after doing some changes that may help:

def has_n_e(w):
    hasE = False
    for c in w:
        if c == 'e':
            hasE = True
    return hasE

f = open("crossword.txt","r").readlines()
count = 0

for x in f:
    word = x[:-1]
    res = has_n_e(word)# you can use ('e' in word) instead of the function
    if res == False:
        count = count + 1

iAns = (count/len(f))*100 //len(f) #is the amount of words in the text file
print (count)
rAns = round(iAns,2)
sAns = str(rAns)
fAns = sAns + "%"
print(fAns)

Hope this will help