关于编码风格：Python PEP：函数定义后的空白行？

Python PEP: blank line after function definition?

我找不到任何关于这个细节的政治公众人物参考。函数定义后必须有空行？

我应该这样做吗：

1 2	def hello_function(): return 'hello'

或者我应该这样做：

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def hello_function():

return 'hello'

当使用docstrings时，同样的问题也适用：

这是：

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def hello_function():
"""
Important function
"""
return 'hello'

或者这个

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def hello_function():
"""
Important function
"""

return 'hello'

编辑

这是PEP在空白行上所说的，正如FoxMaSk所评论的，但是它并没有在这个细节上说什么。

Blank Lines

Separate top-level function and class definitions with two blank
lines.

Method definitions inside a class are separated by a single blank
line.

Extra blank lines may be used (sparingly) to separate groups of
related functions. Blank lines may be omitted between a bunch of
related one-liners (e.g. a set of dummy implementations).

Use blank lines in functions, sparingly, to indicate logical sections.

Python accepts the control-L (i.e. ^L) form feed character as
whitespace; Many tools treat these characters as page separators, so
you may use them to separate pages of related sections of your file.
Note, some editors and web-based code viewers may not recognize
control-L as a form feed and will show another glyph in its place.