I'm trying to remove an empty column from a .csv file that I generate. As can be seen, the first column is empty, I want to remove this but have failed to do so using the pd.drop() feature. Using the pd.info() tells me nothing about the first column. 
Info simply just shows that "0_x" is the first column, but it for sure isn't. This is the simple code I've used so far for this:
def transform_to_test():
df1 = pd.read_csv('csv-data/testfile.csv')
df2 = pd.read_csv('csv-data/testlabelfile.csv')
new_df = pd.merge(df1, df2[['Unnamed: 0', '0']], on='Unnamed: 0', how='left')
new_df = new_df.drop(['Unnamed: 0'], axis=1)
print(new_df.info())
new_df.to_csv(r'testing.csv')
I've tried adding the empty string '' to the drop function, but it produces an error:
KeyError: "[''] not in index"
Hope you can help
