Question

我有以下代码：

def bear_room():
    print("""There is a bear here
    The bear has a bunch of honey
    The fat bear is in front of another door
    How are you going to move the bear?
    """)

它返回以下内容：

There is a bear here
    The bear has a bunch of honey
    The fat bear is in front of another door
    How are you going to move the bear?

有人可以建议我如何摆脱第2,3和4行的缩进吗？

Answer 1

如果您无法修改该字符串文字（例如，它是在代码之外定义的），请使用inspect.cleandoc或等效字符：

def bear_room():
    print("""There is a bear here
The bear has a bunch of honey
The fat bear is in front of another door
How are you going to move the bear?""")

bear_room()

如果您可以修改它，则手动删除前导空格要容易得多：

In [2]: import inspect

In [3]: s = inspect.cleandoc("""There is a bear here
   ...:     The bear has a bunch of honey
   ...:     The fat bear is in front of another door
   ...:     How are you going to move the bear?
   ...: """)

In [4]: print(s)
There is a bear here
The bear has a bunch of honey
The fat bear is in front of another door
How are you going to move the bear?

或使用隐式string literal concatenation：

def bear_room():
    print("""There is a bear here
The bear has a bunch of honey
The fat bear is in front of another door
How are you going to move the bear?
""")

如果您使用换行符（def bear_room(): print('There is a bear here\n' 'The bear has a bunch of honey\n' 'The fat bear is in front of another door\n' 'How are you going to move the bear?\n')）结束字符串，此选项将产生预期结果。

Answer 2

请检查此答案：https://stackoverflow.com/a/2504457/1869597

一般来说，您可以选择使用：

def bear_room():
    print("There is a bear here\n"
          "The bear has a bunch of honey\n"
          "The fat bear is in front of another door\n"
          "How are you going to move the bear?"
    )

这称为隐式连接。

Answer 3

可以使用dedent功能。以下解决方案具有3个优点

一行不必在每行的末尾添加\n字符，文本可以直接从extern源复制，
可以保留我们功能的缩进，
在文字

该功能如下所示：

from textwrap import dedent
dedentString = lambda s : dedent(s[1:])[:-1]

def bear_room():
    s="""
    There is a bear here
    The bear has a bunch of honey
    The fat bear is in front of another door
    How are you going to move the bear?
    """
    print("Start of string : ")
    print(dedentString(s))
    print("End of string")

bear_room()

结果是：

Start of string :
There is a bear here
The bear has a bunch of honey
The fat bear is in front of another door
How are you going to move the bear?
End of string

Answer 4

在原始代码中，在第一行之后有缩进 - 三重引用字符串中的缩进是空格。所以你需要删除它们。

以下作品：

some_behaviour

Python三重引用返回缩进字符串

4 个答案: