Pandas Datetime: Create a graphical analysis of UFO Sightings year

Pandas Datetime: Exercise-18 with Solution

Write a Pandas program to create a graphical analysis of UFO (unidentified flying object) Sightings year.

Sample Solution:

Python Code:

import pandas as pd
import matplotlib.pyplot as plt
import seaborn as sns
df = pd.read_csv(r'ufo.csv')
df['Date_time'] = df['Date_time'].astype('datetime64[ns]')
df["ufo_yr"] = df.Date_time.dt.year
years_data = df.ufo_yr.value_counts()
years_index = years_data.index  # x ticks
years_values = years_data.get_values()
plt.xticks(rotation = 60)
plt.title('UFO Sightings by Year')
plt.ylabel("Number of reports")
years_plot = sns.barplot(x=years_index[:60],y=years_values[:60], palette = "Reds")

Sample Output:

Graphical analysis of distribution of UFO

Python Code Editor:

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Previous: Write a Pandas program to manipulate and convert date times with timezone information.
Next: Write a Pandas program to check the empty values of UFO (unidentified flying object) Dataframe.

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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))


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")


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)


2 4 6
p q r