How to reassign index in pandas dataframe

The index may be disturbed while manipulating the dataframe such as deleting rows or joining. In this case, if you want to reassign the index from 0, use reset_index (drop = True).

reset_index.py


    rssi_data = rssi_data.reset_index(drop=True)

Example

before.py


 print window_data.head()
               t   dist(8)   dist(9)  dist(10)  dist(11)  dist(12)
13  12:55:26.600  2.362109  2.369736  2.031889  1.240509  0.860399
14  12:55:26.800  2.336146  2.385064  1.986095  1.210598  0.847227
15  12:55:27.000  2.312065  2.412682  1.936422  1.180321  0.835603
16  12:55:27.200  2.289813  2.441181  1.891472  1.154516  0.823569
17  12:55:27.400  2.269342  2.470586  1.850973  1.132922  0.811148

index reassignment

after.py


 window_data = window_data.reset_index(drop=True)
 print window_data.head()
              t   dist(8)   dist(9)  dist(10)  dist(11)  dist(12)
0  12:55:26.600  2.362109  2.369736  2.031889  1.240509  0.860399
1  12:55:26.800  2.336146  2.385064  1.986095  1.210598  0.847227
2  12:55:27.000  2.312065  2.412682  1.936422  1.180321  0.835603
3  12:55:27.200  2.289813  2.441181  1.891472  1.154516  0.823569
4  12:55:27.400  2.269342  2.470586  1.850973  1.132922  0.811148

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