Python Forum

I wrote this code for some uni work, was all working fine then when i logged in this morning to try it again i get "DF is not defined" Can anyone see why at all?

import pandas as pd
import csv as df

df = pd.read_csv("/Users/maddieroberts/Desktop/code/university_picker/course_data.csv")

def read_data_base(filename):
    """
    A function to read data
    """
    return pd.read_csv("/Users/maddieroberts/Desktop/code/university_picker/course_data.csv")

def build_boolean_index(df, criteria):
    """
    A function used to input an individuals preferences for university
    """
    indices = [df[key] == value for key, value in criteria.items()]
    index = indices[0]
    for column in indices[1:]:
        index = index & column
    return index

def get_choice(df, criteria):
    """
    A function to return the options calculated from the previous boolean

    """
    index = build_boolean_index(df, criteria)
    return df[index]

Please, post the full traceback you get, in error tags