Question

我有以下字符串：

Python太棒了......

我真的要告诉你......

永不放弃......

我想用python来计算字符串末尾有多少个点。

功能：

string.endswith(".")

只给我True或False布尔值。有没有办法得到确切的数字？

Answer 1

如果点只在最后，它应该有所帮助：

string.count('.')

但如果短语不仅在最后有点 - 它需要改变

Answer 2

你可以使用代码

import re

regex = r"\.+(?=\.*)$"

test_str = ("Python is awesome...")

matches = re.finditer(regex, test_str, re.MULTILINE)
count = 0;

for matchNum, match in enumerate(matches):
    matchNum = matchNum + 1

    print ("Match {matchNum} was found at {start}-{end}: {match}".format(matchNum = matchNum, start = match.start(), end = match.end(), match = match.group()))
    count = count + match.end() - match.start();
print count;

Answer 3

你可以这样做：

counter = 0
while True:
    if string.endswith('.'):
        counter += 1
        string = string[:-1]  # here we remove the last character
    else:
        break
print("number of dots at the end: " + counter)

Answer 4

你可以这样做

import re
text = '''
Python is awesome...
I really have to tell you ......
never give up..
'''
out = re.findall('\.+$', text)
for o in out:
    print len(o)

Answer 5

你可以这样做：

(function() { var base_url = 'www.domain.com' })()

Python：如何计算字符串末尾的点点图案？

5 个答案: