Part 13: Upvote Posts In Batches Based On Current Voting Power With Steem-Python

This tutorial is part of a series where different aspects of programming with steem-python are explained. Links to the other tutorials can be found in the curriculum section below. This part is a direct continuation on Part 3: Creating A Dynamic Autovoter That Runs 24/7. In part 3 a dynamic automated upvoter is built that upvotes authors from a list with a set upvote weight and total upvote per author limit. The upvotes are executed directly after the post is seen on the blockchain. This part will instead add the post from the author to a queue and upvotes the entire queue when 100% voting power for the account is reached.

---

What will I learn

• Build a queue
• Upvote a batch of posts
• Retrieve account voting power

Requirements

• Python3.6
• steem-python

Difficulty

• Basic

---

Tutorial

Setup

Download the files from Github.batch_upvoter.py contains the script while upvote_list.json is a list of author that the script will upvote.

author in upvote_list.json

  "steempytutorials": {
    "upvote_weight": 100,
    "upvote_limit": 1
  }

Run the script as normal
> python batch_upvoter.py

Build a queue

Instead of directly upvoting the post. The post will be added to a queue. The queue is a dict and for every post the identifier and upvote_weight for the given author are used as a pair.

upvote_queue = {}

for each post:
  if post['identifier'] not in upvote_queue:
      upvote_queue[post['identifier']] = upvote_list[author]["upvote_weight"]

Upvote a batch of posts

When an upvote cycle is started all posts are taken from the dict and individually upvoted. As there is a 3 second cooldown on upvoting on the Steem blockchain after the upvote the script waits for 3 seconds.

for identifier in upvote_queue:
    upvote_weight = upvote_queue[identifier]
        try:
            print ("Upvoting {} for {} %".format(identifier, upvote_weight))
            steem.vote(identifier, upvote_weight, account)
            print ("Succes, sleeping for 3 seconds")
            time.sleep(3)
        except Exception as e:
            print (repr(e))

Retrieve account voting power

The account object contains valuable information for each account, like the current voting power. The standard function voting_power() retrieves the height of the voting power for the last upvote made by the account. To get the current voting power this function has to be replaced with the following code.

The function is located in account.py from steem-Python

def voting_power(self):
    diff_in_seconds = (datetime.datetime.utcnow() - parse_time(
    self["last_vote_time"])).seconds
    regenerated_vp = diff_in_seconds * 10000 / 86400 / 5
    total_vp = (self["voting_power"] + regenerated_vp) / 100
    if total_vp>100:
        return 100
    else:
        return "%.2f" % total_vp

source

Now the current height of the accounts voting power can be used to start an upvote cycle.

from steem.account import Account

account      = Account(account)

# start upvoting cycle at 100% voting power
if account.voting_power() == 100:
    start_upvote_cycle(upvote_queue, account)

Running the script

Set account to your own account. Running the script will have the program listen in on the Steem blockchain for posts made by authors in upvote_list.json. These posts are added to a queue wich is emptied when 100% voting power is reached. Use the standard list or alter the list to your own liking.

Curriculum

• Part 3: Creating A Dynamic Autovoter That Runs 24/7

---

The code for this tutorial can be found on GitHub!

This tutorial was written by @juliank in conjunction with @amosbastian.

---

Posted on Utopian.io - Rewarding Open Source Contributors

---