如何在 python 中检查字符串是否包含特定字符
How to check if a string contains a specific character or not in python
我是 python 的新手,但在编程方面相当有经验。在学习 python 时,我试图创建一个简单的函数,从文本文件中读取单词(文本文件中的每一行都是一个新单词),然后检查每个单词是否有字母 'e' 或不。然后程序应该计算没有字母 'e' 的单词的数量,并使用该数量来计算文本文件中没有 'e' 的单词的百分比。
我 运行 遇到了一个问题,我非常确定我的代码是正确的,但在测试输出后它是错误的。请帮忙!
代码如下:
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)
以下是经过一些可能有帮助的更改后的代码:
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)
希望这会有所帮助
我是 python 的新手,但在编程方面相当有经验。在学习 python 时,我试图创建一个简单的函数,从文本文件中读取单词(文本文件中的每一行都是一个新单词),然后检查每个单词是否有字母 'e' 或不。然后程序应该计算没有字母 'e' 的单词的数量,并使用该数量来计算文本文件中没有 'e' 的单词的百分比。
我 运行 遇到了一个问题,我非常确定我的代码是正确的,但在测试输出后它是错误的。请帮忙!
代码如下:
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)
以下是经过一些可能有帮助的更改后的代码:
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)
希望这会有所帮助