Python - Filter Pandas DataFrame by Time

To filter DataFrame by time, use the loc and set the condition in it to fetch records. At first, import the required library −

import pandas as pd

Create a Dictionary of list with date records −

d = {'Car': ['BMW', 'Lexus', 'Audi', 'Mercedes', 'Jaguar', 'Bentley'],'Date_of_Purchase': ['2021-07-10', '2021-08-12', '2021-06-17', '2021-03-16', '2021-05-19', '2021-08-22']
   }

Creating a dataframe from the above dictionary of lists −

dataFrame = pd.DataFrame(d)

Now, let’s say we need to fetch cars purchased after a specific date. For this, we use loc −

resDF = dataFrame.loc[dataFrame["Date_of_Purchase"] > "2021-07-15"]

Example

Following is the complete code −

import pandas as pd

# dictionary of lists
d = {'Car': ['BMW', 'Lexus', 'Audi', 'Mercedes', 'Jaguar', 'Bentley'],'Date_of_Purchase': ['2021-07-10', '2021-08-12', '2021-06-17', '2021-03-16', '2021-05-19', '2021-08-22']
   }

# creating dataframe from the above dictionary of lists
dataFrame = pd.DataFrame(d)
print"DataFrame...\n",dataFrame

# fetch cars purchased after 15th July 2021
resDF = dataFrame.loc[dataFrame["Date_of_Purchase"] > "2021-07-15"]

# print filtered data frame
print"\nCars purchased after 15th July 2021: \n",resDF

Output

This will produce the following output −

DataFrame...
        Car   Date_of_Purchase
0       BMW         2021-07-10
1     Lexus         2021-08-12
2      Audi         2021-06-17
3  Mercedes         2021-03-16
4    Jaguar         2021-05-19
5   Bentley         2021-08-22

Cars purchased after 15th July 2021:
       Car   Date_of_Purchase
1    Lexus         2021-08-12
5  Bentley         2021-08-22