MacBook-Pro:~ neatavino cd 认识Python/
MacBook-Pro:认识Python neatavino python3 01-HelloPython.py
我很帅
MacBook-Pro:认识Python neatavino$ python
Python 2.7.10 (default, Feb 22 2019, 21:55:15)
[GCC 4.2.1 Compatible Apple LLVM 10.0.1 (clang-1001.0.37.14)] on darwin
Type "help", "copyright", "credits" or "license" for more information.

1.01**365
37.78343433288728
exit()
MacBook-Pro:认识Python neatavino$ python
n3
Python 3.8.2 (v3.8.2:7b3ab5921f, Feb 24 2020, 17:52:18)
[Clang 6.0 (clang-600.0.57)] on darwin
Type "help", "copyright", "credits" or "license" for more information.

#快捷键ctrl+D

^D
MacBook-Pro:认识Python neatavino$ python
Python 2.7.10 (default, Feb 22 2019, 21:55:15)
[GCC 4.2.1 Compatible Apple LLVM 10.0.1 (clang-1001.0.37.14)] on darwin
Type "help", "copyright", "credits" or "license" for more information.
print("hallo world")
hallo world