import pandas as pd
import numpy as np
#import matplotlib.pyplot as plt

s = pd.Series([1,3,5,np.nan,6,8])
print s

dates = pd.date_range('20130101', periods=6)
print dates


df = pd.DataFrame(np.random.randn(6,4), index=dates, columns=list('ABCD'))
print df


df2 = pd.DataFrame({ 'A' : 1.,
    'B' : pd.Timestamp('20130102'),
    'C' : pd.Series(1,index=list(range(4)),dtype='float32'),
    'D' : np.array([3] * 4,dtype='int32'),
    'E' : pd.Categorical(["test","train","test","train"]),
    'F' : 'foo' })
print df2

print df2.dtypes

print df.head()
print df.tail(3)

print df.values

print df.describe()

print df.T

print df.sort_index(axis=1, ascending=False)


#print df.sort_values(by='B')


print df['A']

print df[0:3]




print df.mean()