Stack two pandas data frames

Question

How do I stack the following 2 dataframes:

df1
    hzdept_r    hzdepb_r    sandtotal_r
0   0           114         0
1   114         152         92.1

df2
    hzdept_r    hzdepb_r    sandtotal_r
0   0           23          83.5
1   23          152         45

to give the following result:

    hzdept_r    hzdepb_r    sandtotal_r
0   0           114         0
1   114         152         92.1
2   0           23          83.5
3   23          152         45

Using the pandas merge operations does not work since it just lines the dataframes horizontally (and not vertically, which is what I want)

Asked By: user308827

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Source

Answer 1

In [5]: a = pd.DataFrame(data=np.random.randint(0,100,(2,5)),columns=list('ABCDE'))

In [6]: b = pd.DataFrame(data=np.random.randint(0,100,(2,5)),columns=list('ABCDE'))

In [7]: c = pd.concat([a,b],ignore_index=True)

In [8]: c
Out[8]: 
    A   B   C   D   E
0  12  56  62  35  20
1  10  71  63   0  70
2  61  72  29  10  71
3  88  82  39  73  94

Answered By: tnknepp

Stack two pandas data frames

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