PandasColumnCapsDemo

# For a comment on this SO answer: http://stackoverflow.com/a/19726078/781938

import pandas as pd

# create a DataFrame with two columns: 'a' and 'A'
data = pd.DataFrame({'a':[1],'A':[2]})

# print the result
print data
# prints:
#    A  a
# 0  2  1

# convert the column names to lowercase
data.columns = map(str.lower, data.columns)

# print again
print data
# prints
#    a  a
# 0  2  1

# print column 'a'
print data['a']
# prints:
#    a  a
# 0  2  1

# which is a little funky