英文:
How do I read a specific line from a string in Python?
问题
如何在Python中从字符串中读取特定行？例如，假设我想要从以下字符串中获取第2行：
string = """The quick brown fox
jumps over the
lazy dog."""
line = getLineFromString(string, 2)
print(line) # jumps over the
关于从文件中读取特定行有几个问题，但如何从字符串中读取特定行呢？
英文:
How can I read a specific line from a string in Python? For example, let's say I want line 2 of the following string:
string = """The quick brown fox
jumps over the
lazy dog."""
line = getLineFromString(string, 2)
print(line) # jumps over the
There are several questions about reading specific lines from a file, but how would I read specific lines from a string?
答案1
得分: 2
在Python中，没有原始数据类型，因此您的字符串是一个对象。它具有方法，包括splitlines()。
my_string = """The quick brown fox
jumps over the
lazy dog."""
line = my_string.splitlines()[1] # 从0开始的索引，所以1是第二行
print(line) # 'jumps over the'
英文:
There are no primitives in python, so your string is an object. Which has methods, including splitlines().
my_string = """The quick brown fox
jumps over the
lazy dog."""
line = my_string.splitlines()[1] # 0 based index, so 1 is the second line
print(line) # 'jumps over the'
答案2
得分: -1
你可以在换行符上拆分字符串，然后取结果数组的第N个元素。
string.split('\n')
# => ['The quick brown fox ', 'jumps over the', 'lazy dog.']
请记住，Python 数组是从0开始索引的，所以第2个元素在索引1处。
string.split('\n')[1]
# => 'jumps over the'
英文:
You can split the string on the newlines, then take the Nth element of the resulting array.
string.split('\n')
# => ['The quick brown fox ', 'jumps over the', 'lazy dog.']
Remember that Python arrays are 0-indexed, so the 2nd element is at index 1.
string.split('\n')[1]
# => 'jumps over the'
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