为什么 Python 允许三重引号作为多行注释和字符串文字

Question

我是python的新手，问题可能听起来很愚蠢，但我想清除它。在学习过程中，我遇到了 python 允许三引号(""(作为多行注释和字符串文字的代码。那么python如何知道它是作为注释还是字符串文字。

"""This
is treated
as comment
and ignored"""
a = """It is
treated as
string literal"""
print(a)

输出：-

It is
treated as
string literal

Answer 1

本质上，如果三引号没有分配给变量或文档字符串，python 将忽略它。例如

""""This is a module-level docstring""""

def randomFunction():
"""This will be treated as a docstring,
so if you were to run help(randomFunction) it 
will display whatever is in here"""

a = """This is actually assigned to a variable,
and thus python will interpret it as such"""
"""This by itself is just an unassigned string variable """

字符串也是如此，字符串位于两个引号内。