python - show repeted values in a column
df = df[df.duplicated(subset=['val1','val2'], keep=False)]python - show repeted values in a column
df = df[df.duplicated(subset=['val1','val2'], keep=False)]pandas.duplicated
>>> df.duplicated(subset=['brand'])
0 False
1 True
2 False
3 True
4 True
dtype: boolhow to duplicate a row in python
import pandas as pd
In [603]: df = pd.DataFrame({'col1':list("abc"),'col2':range(3)},index = range(3))
In [604]: df
Out[604]:
col1 col2
0 a 0
1 b 1
2 c 2
In [605]: pd.concat([df]*3, ignore_index=True) # Ignores the index
Out[605]:
col1 col2
0 a 0
1 b 1
2 c 2
3 a 0
4 b 1
5 c 2
6 a 0
7 b 1
8 c 2
In [606]: pd.concat([df]*3)
Out[606]:
col1 col2
0 a 0
1 b 1
2 c 2
0 a 0
1 b 1
2 c 2
0 a 0
1 b 1
2 c 2pandas.duplicated
>>> df.duplicated(keep='last')
0 True
1 False
2 False
3 False
4 False
dtype: boolpandas.duplicated
>>> df = pd.DataFrame({
... 'brand': ['Yum Yum', 'Yum Yum', 'Indomie', 'Indomie', 'Indomie'],
... 'style': ['cup', 'cup', 'cup', 'pack', 'pack'],
... 'rating': [4, 4, 3.5, 15, 5]
... })
>>> df
brand style rating
0 Yum Yum cup 4.0
1 Yum Yum cup 4.0
2 Indomie cup 3.5
3 Indomie pack 15.0
4 Indomie pack 5.0Copyright © 2021 Codeinu
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