Five interesting magic commands in jupyter notebook

many ​ As we all know ,Jupyter notebook It's an interactive Python shell, That is to say IPython The packaged version of , It is very suitable for data analysis and machine learning .

Jupyter notebook There are many practical and little-known functions in , Can achieve interesting operations , Like to remember to collect 、 Focus on 、 give the thumbs-up .

Unlock more tips , At the end of the article, add groups to discuss .

This time 5 A simple example .

1、 Script code is written to local file

%%file Method can write script code locally Py file .

%%file E:\hello.py
def func_inside_script(x, y):
    return x + y
print('Hello World')

2、 perform Py file

stay notebook Can be directly executed Py file , adopt %run Method to implement .

%run hello.py

3、 Monitor code runtime

Maybe your code needs precise time control , that %timeit Methods can help you .

%timeit [x**2 for x in range(100)] 

4、 Use the system command line

stay windows in , To use the command line, you need to open cmd window , If you use notebook, You can use the ! Method to easily execute command line code .

#  New folder 
my_dir = 'new_dir'
!mkdir $my_dir

5、 Fast debug

bug It's a headache , stay notebook Can be easily carried out debug, Use %debug Command is enough .

def some_func():
    var = 'hello world'
    for i in range(5):
        print(i)
    i / 0
    return 'finished'

%debug
some_func()

Jupyter notebook There are also many interesting magic commands , If you are interested, you can explore more .

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