Python:求和字符串长度

Python: Sum string lengths(Python:求和字符串长度)
本文介绍了Python:求和字符串长度的处理方法,对大家解决问题具有一定的参考价值,需要的朋友们下面随着跟版网的小编来一起学习吧!

问题描述

在 Python 中,有没有比使用循环更惯用的方法来求和字符串长度?

Is there a more idiomatic way to sum string lengths in Python than by using a loop?

length = 0
for string in strings:
    length += len(string)

我试过 sum(),但它只适用于整数:

I tried sum(), but it only works for integers:

>>> sum('abc', 'de')
Traceback (most recent call last):
  File "<stdin>", line 1, in <module>
TypeError: sum() can't sum strings [use ''.join(seq) instead]

推荐答案

我知道这是一个老问题,但我不禁注意到 Python 错误消息告诉你如何做到这一点:

I know this is an old question, but I can't help noting that the Python error message tells you how to do this:

TypeError: sum() can't sum strings [use ''.join(seq) instead]

所以:

>>> strings = ['abc', 'de']
>>> print len(''.join(strings))
5

这篇关于Python:求和字符串长度的文章就介绍到这了,希望我们推荐的答案对大家有所帮助,也希望大家多多支持跟版网!

本站部分内容来源互联网,如果有图片或者内容侵犯您的权益请联系我们删除!

相关文档推荐

patching a class yields quot;AttributeError: Mock object has no attributequot; when accessing instance attributes(修补类会产生“AttributeError:Mock object has no attribute;访问实例属性时)
How to mock lt;ModelClassgt;.query.filter_by() in Flask-SqlAlchemy(如何在 Flask-SqlAlchemy 中模拟 lt;ModelClassgt;.query.filter_by())
FTPLIB error socket.gaierror: [Errno 8] nodename nor servname provided, or not known(FTPLIB 错误 socket.gaierror: [Errno 8] nodename nor servname provided, or not known)
Weird numpy.sum behavior when adding zeros(添加零时奇怪的 numpy.sum 行为)
Why does the #39;int#39; object is not callable error occur when using the sum() function?(为什么在使用 sum() 函数时会出现 int object is not callable 错误?)
How to sum in pandas by unique index in several columns?(如何通过几列中的唯一索引对 pandas 求和?)