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File Date Author Commit
examples 2014-10-03 Vernon Cole Vernon Cole [3897fc] xls write using data types
service 2014-04-22 Vernon Cole Vernon Cole [b6c792] server connection cleanup on exit
test 2015-06-11 Vernon Cole Vernon Cole [a7815c] fix is64bit on Linux
.hgignore 2014-05-01 Vernon Cole Vernon Cole [e438e9] document 'pyformat' and 'dynamic' paramstyles
.hgtags 2013-06-04 Vernon Cole Vernon Cole [99b509] Added tag 2.5.0final for changeset 845caaf77a28 2013-04-19 Vernon Cole Vernon Cole [49cbc0] Document testing
PKG-INFO 2013-03-22 Vernon Cole Vernon Cole [fb52fb] minor bug fix, major revision in test handling.
README.txt 2014-05-29 Vernon Cole Vernon Cole [c80b33] correct pypi download 2014-04-30 Vernon (on vPad-w8) < Vernon (on vPad-w8) < [6b2a65] correct python3 import 2014-04-19 Vernon (on vPad-w8) < Vernon (on vPad-w8) < [c6e1d3] first 2.6.0 test 2014-11-13 Vernon Cole Vernon Cole [54eeba] fix transaction counter bug (Jure Erznožnik) 2014-07-28 Vernon Cole Vernon Cole [105fa3] bug fix #18 and #20 2015-06-11 Vernon Cole Vernon Cole [a7815c] fix is64bit on Linux
license.txt 2013-03-22 Vernon Cole Vernon Cole [fb52fb] minor bug fix, major revision in test handling.
older_whatsnew.txt 2014-04-28 Vernon (on vPad-w8) < Vernon (on vPad-w8) < [3f3eb4] update documentation 2013-05-09 Vernon Cole Vernon Cole [a6e270] add ADODBAPI_VERBOSE environment variable
quick_reference.odt 2015-08-21 Vernon Cole Vernon Cole [1fc10c] document .timeout connection attribute
quick_reference.pdf 2015-08-21 Vernon Cole Vernon Cole [1fc10c] document .timeout connection attribute 2014-04-30 Vernon Cole Vernon Cole [b17f1f] reuse of remote connection raises correct error 2014-04-28 Vernon Cole Vernon Cole [f73ade] define .prepare() for remote
setup.cfg 2010-07-30 Vernon Cole Vernon Cole [1134a4] added distutils setup 2014-05-29 Vernon Cole Vernon Cole [c80b33] correct pypi download

Read Me


A Python DB-API 2.0 (PEP-249) module that makes it easy to use Microsoft ADO 
for connecting with databases and other data sources
using either CPython or IronPython.

Home page: <>
Documentation: <>

* 100% DB-API 2.0 (PEP-249) compliant (including most extensions and recommendations).
* Includes pyunit testcases that describe how to use the module.  
* Fully implemented in Python. -- runs in Python 2.5+ Python 3.0+ and IronPython 2.6+
* Licensed under the LGPL license, which means that it can be used freely even in commercial programs subject to certain restrictions. 
* Includes SERVER and REMOTE modules so that a Windows proxy can serve ADO databases to a Linux client using PyRO.
* The user can choose between paramstyles: 'qmark' 'named' 'format' 'pyformat' 'dynamic'
* Supports data retrieval by column name e.g.:
  for row in myCurser.execute("select name,age from students"):
     print("Student",, "is", row.age, "years old.")
* Supports user-definable system-to-Python data conversion functions (selected by ADO data type, or by column)

* C Python 2.5 or higher
 and pywin32 (Mark Hammond's python for windows extensions.)
 Iron Python 2.6 or higher.  (works in IPy2.0 for all data types except BUFFER)

* (C-Python on Windows): Download pywin32 from and install from .msi (adodbapi is included)
* ((to use Windows as a server, also download and install Pyro4 (requires Python 2.6 or later)))
* (IronPython on Windows): Download adodbapi from  Unpack the zip.
     Open a command window as an administrator. CD to the folder containing the unzipped files.
     Run " install" using the IronPython of your choice.
* (Linux, as a client): download and install from PyPi: "pip install adodbapi Pyro4"

NOTE: ...........
If you do not like the new default operation of returning Numeric columns as decimal.Decimal,
you can select other options by the user defined conversion feature. 
        adodbapi.apibase.variantConversions[adodbapi.ado_consts.adNumeric] = adodbapi.apibase.cvtString
        adodbapi.apibase.variantConversions[adodbapi.ado_consts.adNumeric] = adodbapi.apibase.cvtFloat
        adodbapi.apibase.variantConversions[adodbapi.ado_consts.adNumeric] = write_your_own_convertion_function
whats new in version 2.6
   A cursor.prepare() method and support for prepared SQL statements.
   Lots of refactoring, especially of the Remote and Server modules (still to be treated as Beta code).
   The quick start document 'quick_reference.odt' will export as a nice-looking pdf.
   Added paramstyles 'pyformat' and 'dynamic'. If your 'paramstyle' is 'named' you _must_ pass a dictionary of
      parameters to your .execute() method. If your 'paramstyle' is 'format' 'pyformat' or 'dynamic', you _may_
      pass a dictionary of parameters -- provided your SQL operation string is formatted correctly.

whats new in version 2.5
   Remote module: (works on Linux!) allows a Windows computer to serve ADO databases via PyRO
   Server module: PyRO server for ADO.  Run using a command like= C:>python -m adodbapi.server
   (server has simple connection string macros: is64bit, getuser, sql_provider, auto_security)
   Brief documentation included.  See adodbapi/examples folder adodbapi.rtf
   New connection method conn.get_table_names() --> list of names of tables in database

   Vastly refactored. Data conversion things have been moved to the new adodbapi.apibase module.
   Many former module-level attributes are now class attributes. (Should be more thread-safe)
   Connection objects are now context managers for transactions and will commit or rollback.
   Cursor objects are context managers and will automatically close themselves.
   Autocommit can be switched on and off.
   Keyword and positional arguments on the connect() method work as documented in PEP 249.
   Keyword arguments from the connect call can be formatted into the connection string.
   New keyword arguments defined, such as: autocommit, paramstyle, remote_proxy, remote_port.
  *** Breaking change: variantConversion lookups are simplified: the following will raise KeyError:
      Refactor as: oldconverter=adodbapi.variantConversions[adodbapi.adoStringTypes[0]]

(( More information like this in older_whatsnew.txt ))
LGPL, see

Start with:
read the examples in adodbapi/examples
and look at the test cases in adodbapi/test directory. 

Mailing lists
The adodbapi mailing lists have been deactivated. Submit comments to the 
pywin32 or IronPython mailing lists.
  -- the bug tracker on will be checked, (infrequently).