Python 查找字符串中有多少行
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Find how many lines in string
提问by falcon user
I am creating a python movie player/maker, and I want to find the number of lines in a multiple line string. I was wondering if there was any built in function or function I could code to do this:
我正在创建一个 python 电影播放器/制作器，我想在多行字符串中找到行数。我想知道是否有任何内置函数或函数我可以编写代码来做到这一点：
x = """
line1
line2 """
getLines(x)
采纳答案by jfs
If newline is '\n'then nlines = x.count('\n').
如果换行是'\n'那么nlines = x.count('\n')。
The advantage is that you don't need to create an unnecessary list as .split('\n')does (the result may differ depending on x.endswith('\n')).
优点是您不需要像.split('\n')这样创建不必要的列表（结果可能因 不同而不同x.endswith('\n')）。
str.splitlines()accepts more characters as newlines: nlines = len(x.splitlines()).
str.splitlines()接受更多字符作为换行符：nlines = len(x.splitlines()).
回答by heemayl
You can do:
你可以做：
len(x.split('\n'))
回答by TigerhawkT3
You can split()it and find the length of the resulting list:
你可以split()找到结果的长度list：
length = len(x.split('\n'))
Or you can count()the number of newline characters:
或者您可以count()设置换行符的数量：
length = x.count('\n')
Or you can use splitlines()and find the length of the resulting list:
或者您可以使用splitlines()并找到结果的长度list：
length = len(x.splitlines())
回答by c z
SPAM\nEGGS\nBEANS= Three lines, two line breaks
SPAM\nEGGS\nBEANS= 三行，两个换行符
So if counting lines, use + 1, or you'll make a fencepost error:
因此，如果计算线数，请使用+ 1，否则您将出现围栏错误：
x.count( "\n" ) + 1
