IPython简明教程

In [1]:

    

lists = [i for i in range(5)]
lists?

%timeit range(1000)


    

    




The slowest run took 7.16 times longer than the fastest. This could mean that an intermediate result is being cached.
100000 loops, best of 3: 6.39 µs per loop

In [2]:

    

%lsmagic


    

    
Out[2]:





Available line magics:
%alias  %alias_magic  %autocall  %automagic  %autosave  %bookmark  %cat  %cd  %clear  %colors  %config  %connect_info  %cp  %debug  %dhist  %dirs  %doctest_mode  %ed  %edit  %env  %gui  %hist  %history  %killbgscripts  %ldir  %less  %lf  %lk  %ll  %load  %load_ext  %loadpy  %logoff  %logon  %logstart  %logstate  %logstop  %ls  %lsmagic  %lx  %macro  %magic  %man  %matplotlib  %mkdir  %more  %mv  %notebook  %page  %pastebin  %pdb  %pdef  %pdoc  %pfile  %pinfo  %pinfo2  %popd  %pprint  %precision  %profile  %prun  %psearch  %psource  %pushd  %pwd  %pycat  %pylab  %qtconsole  %quickref  %recall  %rehashx  %reload_ext  %rep  %rerun  %reset  %reset_selective  %rm  %rmdir  %run  %save  %sc  %set_env  %store  %sx  %system  %tb  %time  %timeit  %unalias  %unload_ext  %who  %who_ls  %whos  %xdel  %xmode

Available cell magics:
%%!  %%HTML  %%SVG  %%bash  %%capture  %%debug  %%file  %%html  %%javascript  %%js  %%latex  %%perl  %%prun  %%pypy  %%python  %%python2  %%python3  %%ruby  %%script  %%sh  %%svg  %%sx  %%system  %%time  %%timeit  %%writefile

Automagic is ON, % prefix IS NOT needed for line magics.

In [3]:

    

%run test_run.py


    

    




/Users/weixi/mygit/lab/DevTools/Conda简明教程.ipynb
/Users/weixi/mygit/lab/DevTools/ipynb_to_markdown.ipynb
/Users/weixi/mygit/lab/DevTools/IPython简明教程.ipynb
/Users/weixi/mygit/lab/DevTools/Python闭包与装饰器.ipynb
/Users/weixi/mygit/lab/DevTools/testIPython.ipynb
/Users/weixi/mygit/lab/DevTools/十大方程.ipynb

In [4]:

    

!iPython profile locate default


    

    




/Users/weixi/.ipython/profile_default

In [5]:

    

ls /Users/weixi/.ipython/profile_default


    

    




db/                       ipython_kernel_config.py  security/
history.sqlite            log/                      startup/
ipython_config.py         pid/

In [6]:

    

from IPython.lib import passwd
my_psss = passwd('weixi')
my_psss


    

    
Out[6]:





'sha1:03f62c0d5d14:490f11660e2c1209cd19ecc206c9646e429a028e'

In [7]:

    

%who


    

    




file	 files	 i	 list_ext_files	 lists	 my_psss	 os	 passwd	 path_should_ignore	 

In [8]:

    

class MyData(object):
    pass

mathObj = MyData()
mathObj.x = 10
mathObj.y = 20
z = mathObj.x + mathObj.y
z


    

    
Out[8]:





30

In [9]:

    

class AddressBook(object):
    def __init__(self, name, phone):
        self.name = name
        self.phone = phone
        print "Address create: {}, {}".format(self.name, self.phone)

class EmpolyeeAB(AddressBook):
    def __init__(self, name, phone, title):
#         super(EmpolyeeAB, self).__init__(name, phone)
        AddressBook.__init__(self, name, phone)
        self.title = title
        print "Employee create: {}".format(self.title)

eab = EmpolyeeAB("weixi", "130", "cxo")

print eab.title, eab.name, eab.phone


    

    




Address create: weixi, 130
Employee create: cxo
cxo weixi 130

In [10]:

    

import this


    

    




The Zen of Python, by Tim Peters

Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the temptation to guess.
There should be one-- and preferably only one --obvious way to do it.
Although that way may not be obvious at first unless you're Dutch.
Now is better than never.
Although never is often better than *right* now.
If the implementation is hard to explain, it's a bad idea.
If the implementation is easy to explain, it may be a good idea.
Namespaces are one honking great idea -- let's do more of those!

In [11]:

    

colors = ['red','green','blue']
str_colors = ','.join(colors)
str_colors


    

    
Out[11]:





'red,green,blue'

In [12]:

    

type(range(10))
type(reversed(range(10)))
list(reversed(range(10)))


    

    
Out[12]:





[9, 8, 7, 6, 5, 4, 3, 2, 1, 0]

In [13]:

    

a = [1, 2, 3, 4, 5, 6]
zip(*([iter(a)]*1))

from itertools import islice


    

In [14]:

    

def one(*x):
    print x[0]
a = [1, 2, 3, 4, 5, 6]
one(*a)


    

    




1

In [15]:

    

import keyword
print keyword.kwlist


    

    




['and', 'as', 'assert', 'break', 'class', 'continue', 'def', 'del', 'elif', 'else', 'except', 'exec', 'finally', 'for', 'from', 'global', 'if', 'import', 'in', 'is', 'lambda', 'not', 'or', 'pass', 'print', 'raise', 'return', 'try', 'while', 'with', 'yield']

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