Repository
https://github.com/holgern/beem
beem is a python library for steem. beem has now 527 unit tests and a coverage of 74 %. The current version is 0.19.47.
I created a discord channel for answering a question or discussing beem: https://discord.gg/4HM592V
Bug Fixes
In order to fix the frozen steem blockchain, steem was updated to 0.19.5 and 0.19.10. Due to this changes, beem stopped working.
Commits 4523f59, a37f108,
2795f9d, d1b15a9, and
bedd1b1 where able to fix all problems.
Problem was the appbase ready node detection which depends on the RPC-node version. Before the update, all nodes with a version below 0.19.4 were not appbase ready and 0.19.4 was appbase ready.
After the blockchain fix, 0.19.5 was not appbase ready and 0.19.10 was appbase ready. This inconsitent versioning was addressed by implementing a version comparison function and by adding three different chains to chains.py (with min_version 0.0.0, 0.19.5 and 0.19.10).
New Features
ObjectCache is now threadsafe
In commits d56e822, 94a7c13, dd9b5b4, 6925794, and b1c3205, a robust solution was found to make all BlockchainObjects thread safe. In each cache function a with self.lock: where self.lock = threading.RLock() was added. This prevents that one thread add something to the cache while an other thread is reading at the same time.
AccountSnapshot class added
In commits bedd1b1, 29d685a, and c54180e a new class was implemented which can be used to access historic account states.
The plot shows the effective SP and own SP of an account over time. The SP is only calculated based on account operation. In the end the difference is only 8958.65 SP - 8961.9 SP = 3.25 SP.
from beem.snapshot import AccountSnapshot
acc_snapshot = AccountSnapshot("holger80")
acc_snapshot.get_account_history()
acc_snapshot.build()
acc_snapshot.build_sp_arrays()
get_account_history() fetches the complete account op history. build() goes then through every operation and adds or removes vests to internal state. Delegations are also tracked in a separate state variable. build_sp_arrays() creates then an array for plotting the effective and owning Steem power.
AccountSnapshot can also be used to plot the curation rewards.
acc_snapshot = AccountSnapshot(account)
acc_snapshot.get_account_history()
acc_snapshot.build(enable_rewards=True)
acc_snapshot.build_curation_arrays()
enable_rewards is now set True in the build() function. This creates an second internal state which trackes all curation_reward operations. build_curation_arrays() builds an array which contain the curation_reward per week and 1000 effective Steem Power.
At the moment, AccountSnapshot is not well documented, but two examples were added the repository:
account_curation_per_week_and_1k_sp.pyaccount_sp_over_time.py
AccountSnapshot is based on account_sp_over_time.py by @crokkon and was enhanced by tracking of Steem and Sbd balance as well as tracking of curation rewards. Some missing operation were added and some bugs fixed.
Commit history
Prepare next release and improve parse_body for post()
Add conversion of datetime objects to timestamp in get_steem_per_mvest
Fix is_network_appbase_ready for newest steem update
Fix known chains and network versions
Fix wrong version number in known_chains
Prepare next release and add chain for testnet.steemitdev.com
Add lazy as option to all discussion classes
Fix start and stop for history_reverse
Add option use_del to ObjectCache, for making the cache thread safe
Try to fix clear_expired_items
Add bool for clear_expired_items to make it thread safe
Add RLock to Cache for make it thread safe
Remove use_del again from ObjectCache and optimize OpjectCache
Example
- A cache performance evaluation script was added to examples
Blockchain
set_cache_auto_cleandisabled
Add support for nodes with version below 0.19.5 and fix node version comparision
Replace recursive call by while loop
- commit 3c78ac8
- Update nodes in Nodelist
- Disable seed.bitcoiner.me node
Release of 0.19.46
Snapshot added
- This class can be used to access old account states. At the moment, only changes in vests are tracked over time.
- example added for plotting SP over time
Steem
- last_node added and refresh of json_config data is forced on node switch
snapshot improved and unit tests fixed
Snapshot
- improved STEEM and SBD history added
- Documentation added
- get_data, reset, build functions added
Fix unit test and improve documentation
Snapshot improved
- commit c54180e
- get_data is now fast
- update_rewards added
- enable_rewards added to build
- build_curation_arrays added
Add blocknumber check to wait_for_and_get_block
If you like what I'm doing, please consider @holger80 as one of your witnesses (steemconnect).
Thank you for you contribution. I can see that you have put a great effort in this library. Keep up good work.
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Informative One! 💥
You are doing some serious business ;-)
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Very interesting library. I played with Steem API via pysteem, but will check your library too.
Hey @holger80
Thanks for contributing on Utopian.
We’re already looking forward to your next contribution!
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