A simple example of using taurus eval scheme with pandas to read a column of a CSV data file

approach_a.py

""" 
A simple example of using taurus eval scheme with pandas to 
read a column of a CSV data file
"""

#create a dummy csv file with 2 columns with headers "x" and "y"
data=\
'''
x,y
2,4
3,6
4,8
5,10
'''

with open('foo.csv', 'w') as f:
    f.write(data)

# read column "y" from foo.csv file as a taurus attribute using pandas
import taurus
m = "eval:@pandas.*/read_csv('foo.csv')['y'].as_matrix()"
a = taurus.Attribute(m)
print a.read()