# python2
＃from __future__ import absolute_import, division, print_function
#print(3/5)
#print(3.0/5)
#print(3//5)
help(print)

"future.py", line 8
  help(print)
       ^
SyntaxError: invalid syntax

# python2
from __future__ import absolute_import, division, print_function
#print(3/5)
#print(3.0/5)
#print(3//5)
help(print)

Help on built-in function print in module __builtin__:

print(...)
  print(value, ..., sep=' ', end='\n', file=sys.stdout)
  
  Prints the values to a stream, or to sys.stdout by default.
  Optional keyword arguments:
  file: a file-like object (stream); defaults to the current sys.stdout.
  sep: string inserted between values, default a space.
  end: string appended after the last value, default a newline.

# python2
#from __future__ import absolute_import, division, print_function

print(3/5)
print(3.0/5)
print(3//5)
#help(print)

"htmlcode">

➜ future git:(master) ✗ python future.py
0.6
0.6


看看，python3.x的语法可以使用了。
有了这两个例子，估计你对future的用法就清晰了吧。
以上就是本文的全部内容，希望对大家的学习有所帮助，也希望大家多多支持。