In dataframe
import pandas as pd
data = {'model': ['first', 'first', 'second', 'second', 'second', 'third',
'third'],
'dtime': ['2017-01-01_112233', '2017-01-01_112234',
'2017-01-01_112234', '2017-01-01_112234', '2017-01-01_112234',
'2017-01-01_112235', '2017-01-01_112235'],
}
df = pd.DataFrame(data, index = ['a.jpg', 'b.jpg', 'c.jpg', 'd.jpg', 'e.jpg',
'f.jpg', 'g.jpg'], columns=['model', 'dtime'])
print(df.head(10))
model dtime
a.jpg first 2017-01-01_112233
b.jpg first 2017-01-01_112234
c.jpg second 2017-01-01_112234
d.jpg second 2017-01-01_112234
e.jpg second 2017-01-01_112234
f.jpg third 2017-01-01_112235
g.jpg third 2017-01-01_112235
within model, there are duplicate dtime values.
For example, rows d and e are duplicates of the c row.
Row g is duplicate of the f row.
For each duplicate (within model) I would like to add suffix (starting from 1)
to the dtime value. Something like this:
model dtime
a.jpg first 2017-01-01_112233
b.jpg first 2017-01-01_112234
c.jpg second 2017-01-01_112234
d.jpg second 2017-01-01_112234-1
e.jpg second 2017-01-01_112234-2
f.jpg third 2017-01-01_112235
g.jpg third 2017-01-01_112235-1
How to do that?
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