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

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

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

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

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

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)