Python Web Scraping: Get the number of magnitude 4.5+ earthquakes detected worldwide by the USGS
Python Web Scraping: Exercise-25 with Solution
Write a Python program to get the number of magnitude 4.5+ earthquakes detected worldwide by the USGS.
Sample Solution:
Python Code:
#https://bit.ly/2lVhlLX
# landing page:
# https://earthquake.usgs.gov/earthquakes/feed/v1.0/csv.php
import csv
import requests
csvurl = 'https://earthquake.usgs.gov/earthquakes/feed/v1.0/summary/4.5_month.csv'
rows = list(csv.DictReader(requests.get(csvurl).text.splitlines()))
print("The number of magnitude 4.5+ earthquakes detected worldwide by the USGS:", len(rows))
Sample Output:
The number of magnitude 4.5+ earthquakes detected worldwide by the USGS: 397
Flowchart:
Python Code Editor:
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What is the difficulty level of this exercise?
Python: Tips of the Day
Find current directory and file's directory:
To get the full path to the directory a Python file is contained in, write this in that file:
import os dir_path = os.path.dirname(os.path.realpath(__file__))
(Note that the incantation above won't work if you've already used os.chdir() to change your current working directory, since the value of the __file__ constant is relative to the current working directory and is not changed by an os.chdir() call.)
To get the current working directory use
import os cwd = os.getcwd()
Documentation references for the modules, constants and functions used above:
- The os and os.path modules.
- The __file__ constant
- os.path.realpath(path) (returns "the canonical path of the specified filename, eliminating any symbolic links encountered in the path")
- os.path.dirname(path) (returns "the directory name of pathname path")
- os.getcwd() (returns "a string representing the current working directory")
- os.chdir(path) ("change the current working directory to path")
Ref: https://bit.ly/3fy0R6m
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