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2015-02-18  本文已影响0人  s3mi0

In [1]:

importpandasaspdprint"Hi! This is a cell. Press the ▶ button above to run it"

Hi! This is a cell. Press the ▶ button above to run it

In [7]:

defprint_10_nums():foriinrange(10):printi,

In [8]:

print_10_nums()

0 1 2 3 4 5 6 7 8 9

In [9]:

%timesum([xforxinrange(100000)])

CPU times: user 24.4 ms, sys: 5.3 ms, total: 29.7 ms

Wall time: 27.1 ms

Out[9]:

4999950000

In [10]:

%timesum(xforxinrange(100000))

CPU times: user 7.38 ms, sys: 2.95 ms, total: 10.3 ms

Wall time: 8.13 ms

Out[10]:

4999950000

In [12]:

importnumpyasnpts=pd.Series(np.random.randn(1000),index=pd.date_range('1/1/2000',periods=1000))df=pd.DataFrame(np.random.randn(1000,4),index=ts.index,columns=['A','B','C','D'])df=df.cumsum()df.plot()pylab.show()

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