Question

我目前正在为我的程序使用此代码，但我需要程序在用户未输入输入时停止。除了我不知道该怎么做。请帮忙。三江源！

line = input("Enter a word:  ")

vowels = 0

for word in line:
    if word == 'a':
        vowels += 1 #more than or equal to 1
    if word == 'e':
        vowels += 1
    if word == 'i':
        vowels += 1
    if word == 'o':
        vowels += 1
    if word == 'u':
        vowels += 1

print (line, "contains", vowels, "vowels ." )

Answer 1

我可以建议：

import sys

line = input("enter a word: ").strip()
if not line:
    sys.exit(0)
vowels = set('aeiouAEIOU')
numVowels = 0
for char in line:
    if char in vowels:
        numVowels += 1
print(line, "contains", numVowels, "vowels." )

这是一个更简洁的版本：

import sys

line = input("enter a word: ").strip()
if not line:
    sys.exit(0)
vowels = set('aeiouAEIOU')
numVowels = sum(1 for char in line if char in vowels)
print(line, "contains", numVowels, "vowels." )

Answer 2

while True:
    line = raw_input('enter a word: ')
    if not line:
        break
    vowels = 0
    for word in line:
        if word == 'a':
            vowels += 1
        if word == 'e':
            vowels += 1
    print (line, 'contains', vowels, 'vowels.')

Answer 3

以下是另一种方法：

#!/usr/bin/python

vowel = set('aeiou')
while True:
    line = input("enter a word: ")
    if not line.strip():
        break
    else:
        count = len([x for x in line if x in vowel])
        print('%s: contains: %d vowels' % (line, count))
print('Exiting.')

输出：

[what_you_got]:[~/script/python]:$ python f.py
enter a word: oh my god
oh my god: contains: 2 vowels
enter a word: really are u kidding me
really are u kidding me: contains: 8 vowels
enter a word:
Exiting.
[what_you_got]:[~/script/python]:$

编程Python元音计数器

3 个答案: