I am reading one file having 2 columns.
1 : issue
2 is timestamp 
timestamp column : 2020, 1, 15, 2, 32, 40, 113000
How to convert to Datetime format?
I am reading one file having 2 columns.
1 : issue
2 is timestamp 
timestamp column : 2020, 1, 15, 2, 32, 40, 113000
How to convert to Datetime format?
Based on what you wrote I think you want
pd.to_datetime(df['timestamp'], format='%Y,%m,%d,%H,%M,%S')
0   2020-01-15 02:32:40
Name: timestamp, dtype: datetime64[ns]
 
    
    This question seem to already have an answer here:
Convert Pandas Column to DateTime
You can pass any string format to pd.to_datetime, so in your case you would use commas.
df = pd.DataFrame({"label": ["label1", "label2"], 
                   "dt":["2020, 1, 15, 2, 32, 40, 113000", 
                         "2020, 1, 16, 2, 32, 40, 113000"]
                  })
df['dt_2'] =  pd.to_datetime(df['dt'], format='%Y, %m, %d, %H, %M, %S, %f')
df.head()
Which will yield
    label   dt                              dt_2
0   label1  2020, 1, 15, 2, 32, 40, 113000  2020-01-15 02:32:40.113
1   label2  2020, 1, 16, 2, 32, 40, 113000  2020-01-16 02:32:40.113
