Append multiple pandas data frames at once

Question

I am trying to find some way of appending multiple pandas data frames at once rather than appending them one by one using

df.append(df) 

Let us say there are 5 pandas data frames t1, t2, t3, t4, t5. How do I append them at once? Something equivalent of

df = rbind(t1,t2,t3,t4,t5) 

Answer 1

I think you can use concat:

print pd.concat([t1, t2, t3, t4, t5]) 

Maybe you can ignore_index:

print pd.concat([t1, t2, t3, t4, t5], ignore_index=True) 

More info in docs.

Answer 2

Have you simply tried using a list as argument of append? Or am I missing anything?

import numpy as np import pandas as pd  dates = np.asarray(pd.date_range('1/1/2000', periods=8)) df1 = pd.DataFrame(np.random.randn(8, 4), index=dates, columns=['A', 'B', 'C', 'D']) df2 = df1.copy() df3 = df1.copy() df = df1.append([df2, df3])  print df