I believe you need join lists by +:
df = pd.DataFrame({'AAA' : [4]*2 + [5]*2, 'BBB' : [10,20,30,40],'CCC' : [100,50,-30,-50]})
print (df)
AAA BBB CCC
0 4 10 100
1 4 20 50
2 5 30 -30
3 5 40 -50
Or use repeat with concatenate:
df =For further actions, you may consider blocking this person and/or reporting abuse
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