django-admin-tools 0.5.1 install

pip install --allow-unverified django-admin-tools django-admin-tools==0.5.1

Pyhon features and tricks

http://sahandsaba.com/thirty-python-language-features-and-tricks-you-may-not-know.html

MySql compressed row format ("Row size too large" error resolve)

I have follow error:

Traceback (most recent call last):

  File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 222, in run_from_argv

    self.execute(*args, **options.__dict__)

  File "/usr/local/lib/python2.7/dist-packages/django/core/management/base.py", line 255, in execute

    output = self.handle(*args, **options)

  File "/home/vinger4/Projects/a360/router/management/commands/places_update.py", line 428, in handle

    airport.save()

  File "/home/vinger4/Projects/a360/content/models.py", line 545, in save

    super(Airport, self).save(*args, **kwargs)

  File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 546, in save

    force_update=force_update, update_fields=update_fields)

  File "/usr/local/lib/python2.7/dist-packages/django/db/models/base.py", line 626, in save_base

    rows = manager.using(using).filter(pk=pk_val)._update(values)

  File "/usr/local/lib/python2.7/dist-packages/django/db/models/query.py", line 605, in _update

    return query.get_compiler(self.db).execute_sql(None)

  File "/usr/local/lib/python2.7/dist-packages/django/db/models/sql/compiler.py", line 1020, in execute_sql

    cursor = super(SQLUpdateCompiler, self).execute_sql(result_type)

  File "/usr/local/lib/python2.7/dist-packages/django/db/models/sql/compiler.py", line 846, in execute_sql

    cursor.execute(sql, params)

  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/mysql/base.py", line 128, in execute

    six.reraise(utils.DatabaseError, utils.DatabaseError(*tuple(e.args)), sys.exc_info()[2])

  File "/usr/local/lib/python2.7/dist-packages/django/db/backends/mysql/base.py", line 120, in execute

    return self.cursor.execute(query, args)

  File "/usr/lib/python2.7/dist-packages/MySQLdb/cursors.py", line 174, in execute

    self.errorhandler(self, exc, value)

  File "/usr/lib/python2.7/dist-packages/MySQLdb/connections.py", line 36, in defaulterrorhandler

    raise errorclass, errorvalue

DatabaseError: (1118, 'Row size too large (> 8126). Changing some columns to TEXT or BLOB or using ROW_FORMAT=DYNAMIC or ROW_FORMAT=COMPRESSED may help. In current row format, BLOB prefix of 768 bytes is stored inline.')

Set ROW_FORMAT=COMPRESSED for my_table:

mysql> SET GLOBAL innodb_file_format=Barracuda; SET GLOBAL innodb_file_per_table=ON; ALTER TABLE my_table ROW_FORMAT=COMPRESSED;

Query OK, 0 rows affected (0.00 sec)

Query OK, 0 rows affected (0.00 sec)

Query OK, 258 rows affected (0.35 sec)

Records: 258  Duplicates: 0  Warnings: 0

mysql> 

Java 7 one-liner to read file into string

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