Pandas Datetime: Get all the sighting years of the unidentified flying object (ufo) and create the year as column
Pandas Datetime: Exercise-6 with Solution
Write a Pandas program to get all the sighting years of the unidentified flying object (ufo) and create the year as column.
Sample Solution :
Python Code :
import pandas as pd
df = pd.read_csv(r'ufo.csv')
df['Date_time'] = df['Date_time'].astype('datetime64[ns]')
print("Original Dataframe:")
print(df.head())
print("\nSighting years of the unidentified flying object:")
df["Year"] = df.Date_time.dt.year
print(df.head(10))
Sample Output:
Original Dataframe: Date_time city ... latitude longitude 0 1910-06-01 15:00:00 wills point ... 32.709167 -96.008056 1 1920-06-11 21:00:00 cicero ... 40.123889 -86.013333 2 1929-07-05 14:00:00 buchanan (or burns) ... 43.642500 -118.627500 3 1931-06-01 13:00:00 abilene ... 38.917222 -97.213611 4 1939-06-01 20:00:00 waterloo ... 34.918056 -88.064167 [5 rows x 11 columns] Sighting years of the unidentified flying object: Date_time city ... longitude Year 0 1910-06-01 15:00:00 wills point ... -96.008056 1910 1 1920-06-11 21:00:00 cicero ... -86.013333 1920 2 1929-07-05 14:00:00 buchanan (or burns) ... -118.627500 1929 3 1931-06-01 13:00:00 abilene ... -97.213611 1931 4 1939-06-01 20:00:00 waterloo ... -88.064167 1939 5 1939-07-07 02:00:00 keokuk ... -91.384722 1939 6 1941-06-01 13:00:00 ludington (hamlin lake) ... -86.452500 1941 7 1942-06-01 22:30:00 hapeville ... -84.410278 1942 8 1944-01-01 12:00:00 san diego ... -117.156389 1944 9 1944-06-01 12:00:00 los alamos ... -106.306389 1944 [10 rows x 12 columns]
Python Code Editor:
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Previous: Write a Pandas program to get all the sighting days of the unidentified flying object (ufo) between 1950-10-10 and 1960-10-10.
Next: Write a Pandas program to create a plot to present the number of unidentified flying object (UFO) reports per year.
What is the difficulty level of this exercise?
Python: Tips of the Day
F strings:
It is a common practice to add variables inside strings. F strings are by far the coolest way of doing it. To appreciate the f strings more, let's first perform the operation with the format function.
name = 'Owen' age = 25 print("{} is {} years old".format(name, age))
Output:
Owen is 25 years old
We specify the variables that go inside the curly braces by using the format function at the end. F strings allow for specifying the variables inside the string.
name = 'Owen' age = 25 print(f"{name} is {age} years old")
Output:
Owen is 25 years old
F strings are easier to follow and type. Moreover, they make the code more readable.
A, B, C = {2, 4, 6} print(A, B, C) A, B, C = ['p', 'q', 'r'] print(A, B, C)
Output:
2 4 6 p q r
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