CODEWITHSUNDEEP
pythonpandasdataframe
failsafe100
failsafe100

Reputation: 133

Compare column values of two dataframes using pandas

I am new to python so please go easy. I have been looking up similar threads but unable to find a neat solution for my problem:

I want to compare column values of two data frames and put the values where different in a new data frame my data frames are below and are different in lenghth(i.e. number of rows). I want to compare Status for each SKU:

df1

SKU PRICE   Status
A   1798    0
C   1798    1
D   999     0
E   1299    1
F   999     0


df2

SKU PRICE   Status
A   1798    1
B   2997    1
C   1798    1
D   999     0

Comparing df2 with df1 I am want to get following df3

SKU PRICE Status
A   1798  0

I know it can be done via loops but I am hoping there is a better solution via pandas or itertools out there?

Thanks for your help

df1: enter image description here

df2: enter image description here

Upvotes: 1

Views: 75

Answers (1)

cs95
cs95

Reputation: 403012

This is a simple merge and filtering operation:

df1.merge(df2, on=['SKU', 'PRICE']).query('Status_x != Status_y')

  SKU  PRICE  Status_x  Status_y
0   A   1798         0         1

Or, more accurately:

(df1.merge(df2, on=['SKU', 'PRICE'], suffixes=('', '_y'))
    .query('Status != Status_y')
    .drop('Status_y', 1))

  SKU  PRICE  Status
0   A   1798       0

Upvotes: 1

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