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Heroku Apps

Create a Heroku app from a git repo and verify the remote in your git configuration

$ heroku create
$ git remote -v

Add an existing Heroku app to a git repo

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INIT FILE

sqlite3 reads a configuration file ~/.sqliterc for the interactive command line. It generally only contain meta-commands such as

.headers ON
.mode column
.nullvalue NULL

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PostgreSQL .psqlrc Tips

List of tips:

• Show date on startup
• Be verbose about feeback
• Set all null fields to NULL
• Turn off the pager so that results keep scrolling by, rather than stopping
• Set the command history files for each host and database
• Set the number of commands to store in the command history

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Git Branches

We have two types of branches: local branches and remote-tracking branches. The names of tracking branches are make up of the name of a "remote" followd by "/" and then the name of a branch in that remote repository.

$ git branch
$ git branch -r

These branches are stored locally:

• .git/refs/heads (for local branches)
• .git/refs/remotes/ (for remote-tracking branches)

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Connect to a Database

• To report the name of the current database

    db

• To display the list of databases

 show dbs

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{
    "version": 1,
    "disable_existing_loggers": false,
    "formatters": {
        "simple": {
            "format": "%(name)s - %(levelname)s - %(message)s"
        }
    },

    "handlers": {

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import logging

logger = logging.getLogger(__name__)

def foo():
    logger.debug('Dump debug message')
    logger.info('Dump info message')
    logger.warn('Dump warn message')
    logger.error('Dump error message')
    logger.critical('Dump critical message')

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import logging

logger = logging.getLogger(__name__)

formatter = logging.Formatter('%(name)s - %(levelname)s - %(message)s')
handler_stream = logging.StreamHandler()
handler_stream.setFormatter(formatter)

logger.addHandler(handler_stream)

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import logging

logger = logging.getLogger(__name__)
logger.setLevel(logging.DEBUG)

formatter = logging.Formatter('[%(levelname)s] %(message)s')

handler_stream = logging.StreamHandler()
handler_stream.setFormatter(formatter)
handler_stream.setLevel(logging.INFO)

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import logging

def foo():
    logging.debug('Dump debug message')
    logging.info('Dump info message')
    logging.warn('Dump warn message')
    logging.error('Dump error message')
    logging.critical('Dump critical message')