beem is a python library for steem. beem has now 430 unit tests and a coverage of 83 %. The current version is 0.19.25.

I created a discord channel for answering question or discussing beem: https://discord.gg/4HM592V

New Features

AsciiChart for beempy

A new class AsciiChart was added to beem. It switches automatically to ascii symbols, when using it with python 2.7.

Price history

beempy pricehistory shows the price history and the current median price. Width and height can be changed by e.g. beempy pricehistory --height 10 --width 10.

Trade history

beempy tradehistory shows the market conversion of STEEM/SBD of the last 7 days. It uses the new trade_history function. The default settings of the optional parameter are:
beempy tradehistory --days 7 --hours 2 --limit 100 --height 75 --width 15.

• days is the time horizont of trades to be included
• hour is the intervall time from which limit trades are taken into account. E.g. --hours 1 --limit 25 means that every hour 25 trades are fetched from the node and the mean value is calcuated from it.
  It is not possible to use all trades as this would take too long.

Chart for orderbook

beempy orderbook --chart visualize the current open orders. The vertical line shows where bids and asks face each other. --limit can be used to include more openorders. --height <int> --width <int> can be used to change heigth and width of the chart.

Sort nodes regarding their ping times

beempy pingnode --sort --remove goes through all nodes in the lists and measures how long a get_config RPC call takes. The nodes are then sorted and all nodes which raise an exception are removed from the nodes list (inf is shown in the table).

currentnode and nextnode skip not working nodes now

beempy currentnode and beempy nextnode skipping not working nodes and putting them at the end of the list. When calling beempy currentnode the shown node is then the first node in the list. beempy nextnode changes the first entry in the node list to the next working node in the list.

keyring support for beempy and wallet

In order to use keyring for storing the wallet password, the following steps are necessary:

• install keyring: pip install keyring
• Change password_storage to keyring: beempy set password_storage keyring and enter the wallet password.
• It also possible to change the password in the keyring by python -m keyring set beem wallet
• python -m keyring get beem wallet will show the set password in the terminal.

When keyring is set as password_storage, keyring.get_password("beem", "wallet") is called whenever beempy needs to access the wallet. If everything works can be tested with:
beempy walletinfo --test-unlock

This can also be used in scripts and unlocks the wallet automatically.

trade_history added to market

trade_history allows to recieve all trades from the market. It calls internally trades. At the moment it returns a list. I'm thinking about a generator concept as in history from account. Parameter are:

• start - datetime object - defines the Start date
• stop - datetime object - defines the stop date, when set to None, the current date is taken.
• intervall - timedelta object. When not None, only limit trades will be returned at each intervall time point
• limit int - limits the batch call size and the number of trades which are fetched when intervall is set.
• raw_data bool when true the jaw json data will be returned.

The output is a list. When using intervall, each object in the list is a list width limit trades inside.

Memory consumption fer requests and websocket reduced when creating more instances of steem

I used now request.Session for https nodes and created a singelton class for the websocket object. This reduces memory consumption when creating several Steem() objects without using shared_steem_instances.

Condenser calls from appbase nodes now possible

Steem(node="https://api.steemit.com", use_condenser=True) will replace any api by condenser_api for all RPC calls.

Changes

Market improved and keyring support added to wallet

• https://github.com/holgern/beem/commit/3643d438496e7fe1a1544d63eaaf743886463b80
• Dokumentation for several functions of market improved
• dict keys for ticker renamed to small names width underscore (identical to python-steem)
• trade_history added. This function allows to fetch a fixed number of trades at each intervall to reduce the time. E.g. it is possible to receive the from the last 7 days 100 trades each 6 hours.
• utc time transformation is added to trades

wallet

• keyring can be used to unlock the wallet. Please store the masterpassword with python -m keyring set beem wallet

AsciiChart added and charts added to cli

• https://github.com/holgern/beem/commit/1ccf4f3281b9b70f5685b5c79ffdccfdc1e85c67

AsciiChart

• new ascii curve plot class created
• width and height can defined and plot() prints an ascii string, which can be interpreted as plot

CLI

• keyring functionallity added
• walletinfo shows if UNLOCK env is set, keyring is installed and if it possible to unlock the wallet (--test-unlock)
• ticker shows a table with the latest market prices
• pricehistory plots the history of the last 3 days together with the median price
• tradehistory shows the STEEM/SBD market price history
• orderbook has now a working chart option
• The sum of SBD and STEEM for open orders was added

Unit test

• tests for new cli function were added

Added password_storage to config for managing keyring/environment for walletpassword

• https://github.com/holgern/beem/commit/ef61625893852ec83c4e4bcc93289b938f2f9428

cli

• set password_storage keyring or set password_storage environment added. password_storage = environment is the default behavior and compatible with all old version.
• when keyring is used, the wallet password can be stored with the keyring module.
• nextnode when the first node and the current url not matches, will this command changes the nodes list, in way that the first node and the current url matches
• nextnode skipps now not working nodes
• createwallet improved and keyring added
• changewalletpassphrase improved

steem

• set_password_storage added to set the password_storage config
• move_current_node_to_front function added, which shifts the nodes until current url and first node matches

storage

• add default for password_storage

wallet

• password_storage is used

unit tess

• test_cli adapted
• test_market adapted on changes

Add sorting nodes by ping times

• https://github.com/holgern/beem/commit/167873a9f6b07d3652b60c57674969d80b8fd888

cli

• nodes can be sorted by ping times with pingnode --sort
• nodes with error can be removed by pingnode --sort --remove
• add wipe option for createwallet

Memory consumption for graphenerpc reduced and other improvements

• https://github.com/holgern/beem/commit/8cc6342d07e3b113929a3579bdd64de5666bfa5a

Memo

• make prefix changeble
  Transationbuilder
• sign() return the signed struct now

Graphenerpc

• Session are used for requests
• Singleton for websocket instance added
• Both measures reduce ram consumption when more than one Steem object is created.
  Add missing scrypt package to dependency

New asscii char set for asciichart

• https://github.com/holgern/beem/commit/9e401fd7ccde3d7978de0d47cc6457c02f1197ec

Asciichart

• added ascii charset for python 2.7

CLI

• adapted to new charset

Allow condenser_api calls for appbase nodes

• https://github.com/holgern/beem/commit/fa98397a4d73a876c31f88a577cc5bfc51e1d628
  steem
• add option use_condenser
  steemnoderpc
• refactoring
  Graphenerpc
• condenser_api calls shen use_condenser=True is set.
  unit tests
• test_comment and test_discussion uses 19.4 nodes now

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