cf-helper 0.1.1

A Python library for interacting with Codeforces API and automating tasks.

cf_helper Library

A Python library for interacting with the Codeforces API, allowing you to fetch user information, ratings, problems, contests, and more.

Table of Contents

• Installation
• API Key Setup
• Usage
• Functions
• Limitations
• License

Installation

To use cf_helper, you need to install the library. Make sure you have pip installed on your system.

pip install cf-helper

API Key Setup

To access private data via the Codeforces API, you'll need to generate an API key:

1. Go to Codeforces: Visit https://codeforces.com/settings/api.
2. Create a new API Key: Provide a name for the key, and Codeforces will generate two parameters:
   • Key: The public part of the API key.
   • Secret: A private, secret part used for signing requests.
3. Store the Key and Secret:
   • Add your key and secret to an environment variable file (e.g., .env):

     key="your_api_key"
     secret="your_api_secret"
     

Usage

1. Importing Functions

   from cf_helper.utility import *
   from dotenv import load_dotenv
   import os
   
   load_dotenv()
   key = os.getenv("key")
   secret = os.getenv("secret")
   
   if __name__ == "__main__":
       handle = "CodeLegendX"
   

2. Fetch User Information

   user_info = get_user_info(handle)
   print("\nUser Info:")
   print(user_info)
   

3. Fetch User Status

   user_status = get_user_status(handle)
   print("\nUser Status:")
   for status in user_status[:2]:
       print(status)
   

4. Fetch User Friends

   user_friends = get_user_friends(handle, key, secret)
   print("\nUser Friends:")
   for friend in user_friends[:2]:
       print(friend)
   

5. Fetch Problems

   problems, problem_statistics = get_problemset_problems(tags="dp", rating=1900)
   print("\nProblems:")
   for problem in problems[:2]:
       print(problem)
   

6. Fetch Problem Statistics

   print("\nProblem Statistics:")
   for stat in problem_statistics[:2]:
       print(stat)
   

7. Fetch Contest Rating Changes

   rating_changes = get_contest_rating_changes(contest_id=566)
   print("\nRating Changes:")
   for change in rating_changes[:2]:
       print(change)
   

8. Fetch Accepted Submission

   submission_link = get_accepted_submission(handle, contestId=2040, index='C')
   print("\nSubmission Link:")
   print(submission_link)
   

Functions

• get_user_info(handle): Fetches user information for a given Codeforces handle.
• get_user_rating(handle): Fetches user rating history.
• get_user_status(handle, from_index=1, count=10): Fetches user submissions.
• generate_api_sig(method, params, secret): Generates an API signature for secure requests.
• get_user_friends(handle, key, secret, only_online=False): Fetches friends list.
• get_problemset_problems(tags=None, problemset_name=None, rating=None): Fetches problems from the problem set.
• get_contest_rating_changes(contest_id): Fetches contest rating changes.
• get_accepted_submission(handle, contestId, index): Fetches a link to an accepted submission.

Limitations

• The library accesses only public data when the API key is not used.
• Private data (e.g., hacks during contests) requires a valid API key.
• The methods are rate-limited by the Codeforces API. Use responsibly.

License

This project is licensed under the MIT License. See the LICENSE file for details.