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PyPoll_Challenge.py
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# -*- coding: UTF-8 -*-
"""PyPoll Homework Challenge Solution."""
# Add our dependencies.
import csv
import os
# Add a variable to load a file from a path.
file_to_load = os.path.join("Resources", "election_results.csv")
# Add a variable to save the file to a path.
file_to_save = os.path.join("analysis", "election_analysis.txt")
# Initialize a total vote counter.
total_votes = 0
# Candidate Options and candidate votes.
candidate_options = []
candidate_votes = {}
# 1: Create a county list and county votes dictionary.
county_list = []
votes_by_county = {}
# Track the winning candidate, vote count and percentage
winning_candidate = ""
winning_count = 0
winning_percentage = 0
# 2: Track the largest county and county voter turnout.
highest_turnout_county = ""
highest_vote_count = 0
# Read the csv and convert it into a list of dictionaries
with open(file_to_load) as election_data:
reader = csv.reader(election_data)
# Read the header
header = next(reader)
# For each row in the CSV file.
for row in reader:
# Add to the total vote count
total_votes = total_votes + 1
# Get the candidate name from each row.
candidate_name = row[2]
# 3: Extract the county name from each row.
county_name = row[1]
# If the candidate does not match any existing candidate add it to
# the candidate list
if candidate_name not in candidate_options:
# Add the candidate name to the candidate list.
candidate_options.append(candidate_name)
# And begin tracking that candidate's voter count.
candidate_votes[candidate_name] = 0
# Add a vote to that candidate's count
candidate_votes[candidate_name] += 1
# 4a: Write an if statement that checks that the
# county does not match any existing county in the county list.
if county_name not in county_list:
# 4b: Add the existing county to the list of counties.
county_list.append(county_name)
# 4c: Begin tracking the county's vote count.
votes_by_county[county_name] = 0
# 5: Add a vote to that county's vote count.
votes_by_county[county_name] += 1
# Save the results to our text file.
with open(file_to_save, "w") as txt_file:
# Print the final vote count (to terminal)
election_results = (
f"\nElection Results\n"
f"-------------------------\n"
f"Total Votes: {total_votes:,}\n"
f"-------------------------\n\n"
f"County Votes:\n")
print(election_results, end="")
txt_file.write(election_results)
# 6a: Write a for loop to get the county from the county dictionary.
for county_name in votes_by_county:
# 6b: Retrieve the county vote count.
county_votes = votes_by_county.get(county_name)
# 6c: Calculate the percentage of votes for the county.
county_votes_percentage = float(county_votes) / float(total_votes) * 100
county_results = f"{county_name}: {county_votes_percentage:.1f}% ({county_votes:,})\n"
# 6d: Print the county results to the terminal.
print(county_results)
# 6e: Save the county votes to a text file.
txt_file.write(county_results)
# 6f: Write an if statement to determine the winning county and get its vote count.
if county_votes > highest_vote_count:
highest_vote_count = county_votes
highest_turnout_county = county_name
# 7: Print the county with the largest turnout to the terminal.
largest_county_turnout = (
f"-------------------------\n"
f"Largest County Turnout: {highest_turnout_county}\n"
f"-------------------------\n")
print(largest_county_turnout, end="")
# 8: Save the county with the largest turnout to a text file.
txt_file.write(largest_county_turnout)
# Save the final candidate vote count to the text file.
for candidate_name in candidate_votes:
# Retrieve vote count and percentage
votes = candidate_votes.get(candidate_name)
vote_percentage = float(votes) / float(total_votes) * 100
candidate_results = (
f"{candidate_name}: {vote_percentage:.1f}% ({votes:,})\n")
# Print each candidate's voter count and percentage to the
# terminal.
print(candidate_results)
# Save the candidate results to our text file.
txt_file.write(candidate_results)
# Determine winning vote count, winning percentage, and candidate.
if (votes > winning_count) and (vote_percentage > winning_percentage):
winning_count = votes
winning_candidate = candidate_name
winning_percentage = vote_percentage
# Print the winning candidate (to terminal)
winning_candidate_summary = (
f"-------------------------\n"
f"Winner: {winning_candidate}\n"
f"Winning Vote Count: {winning_count:,}\n"
f"Winning Percentage: {winning_percentage:.1f}%\n"
f"-------------------------\n")
print(winning_candidate_summary)
# Save the winning candidate's name to the text file
txt_file.write(winning_candidate_summary)