merge csv files - python

Question

I am using a for loop to merge csv files on jupyter notebook, however my result returns a list instead of a dataframe. Could someone help me and tell me what I am doing wrong? Thank you in advance.

files = ['babd_light_z1.csv','babd_light_z2.csv','babd_light_z3.csv']
data = []
for f in files:
     data.append(pd.read_csv(f))

type(data) # returns  list

Answer 1

You can simply use pd.concat(data, axis=0, ignore_index=True) outside your loop to merge your csv files as in:

files = ['babd_light_z1.csv', 'babd_light_z2.csv', 'babd_light_z3.csv']

data = []

for f in files:
    data.append(pd.read_csv(f))

df = pd.concat(data, axis=0, ignore_index=True)

type(df) should return pandas.core.frame.DataFrame

Answer 2

Give this a shot:

combined = pd.combine(data, axis=0)