merge two csv files into output.csv using Subprocess

[snippsat]

Pandas can many times make stuff simpler.

import pandas as pd

df1 = pd.read_csv("1.csv")
df2 = pd.read_csv("2.csv")
df = pd.concat([df1, df2])
df.to_csv("output.csv", index=False)

Output:
Name,Age,Gender
Jane Doe,32,Female
John Smith,45,Male
Kent smith,40,Male
Tom Olsen,45,Male

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Output:
1.csv
Name,Age,Gender
Jane Doe,32,Female
John Smith,45,Male

2.csv
Name,Age,Gender
Kent smith,40,Male
Tom Olsen,45,Male