python的Firebird驱动：FDB使用说明
水平所限，有很多不准确的地方。
原文在这里：http://www.firebirdsql.org/file/documentation/drivers_documentation/python/fdb/getting-started.html#quick-start-guide
firebird 的 python 驱动下载地址：https://pypi.org/project/fdb/#files
安装步骤：
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FDB 是基于Firebird客户端库文件（fbclient.so/dll），用ctypes写的纯python模块，因此，安装FDB前，要确保firebird客户端正确安装。FDB支持Firebird 2.0及以上版本。
FDB作为setuptools包分发，所以，需要先安装 setuptools 或者 compatible package。
从PYPI安装：
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运行easy_install 或 pip:
$ pip install fdb或者：
$ easy_install fdb
从源码安装：
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下载，解压缩，然后运行安装命令
$ curl -O http://pypi.python.org/packages/source/f/fdb/fdb-0.9.1.tar.gz
$ tar -xzvf fdb-0.9.1.tar.gz
$ cd fdb-0.9.1
$ python setup.py install
快速开始：
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本文仅仅演示一些基本的功能。
数据库连接：
例1：
建立一个典型的数据库连接。
import fdb
# The server is named 'bison'; the database file is at '/temp/test.db'.
con = fdb.connect(dsn='bison:/temp/test.db', user='sysdba', password='pass')
# Or, equivalently:
con = fdb.connect(
host='bison', database='/temp/test.db',
user='sysdba', password='pass'
)例2：
假设我们想要用 SQL Dialect 1，以及指定用 UTF-8 编码：
import fdb
con = fdb.connect(
dsn='bison:/temp/test.db',
user='sysdba', password='pass',
dialect=1, # necessary for all dialect 1 databases
charset='UTF8' # specify a character set for the connection
)
执行sql语句：
For this section, suppose we have a table defined and populated by the following SQL code:
本部分，假设我们已经定义了一张表，并且使用如下的 sql 代码写入数据：
create table languages
(
name varchar(20),
year_released integer
);
insert into languages (name, year_released) values ('C', 1972);
insert into languages (name, year_released) values ('Python', 1991);例1：
显示表中的所有内容：
import fdb
con = fdb.connect(dsn='/temp/test.db', user='sysdba', password='masterkey')
# Create a Cursor object that operates in the context of Connection con:
cur = con.cursor()
# Execute the SELECT statement:
cur.execute("select * from languages order by year_released")
# Retrieve all rows as a sequence and print that sequence:
print cur.fetchall()例2：
演示了取得每次提取一行数据的多种方法。
import fdb
con = fdb.connect(dsn='/temp/test.db', user='sysdba', password='masterkey')
cur = con.cursor()
SELECT = "select name, year_released from languages order by year_released"
# 1. Iterate over the rows available from the cursor, unpacking the
# resulting sequences to yield their elements (name, year_released):
cur.execute(SELECT)
for (name, year_released) in cur:
print '%s has been publicly available since %d.' % (name, year_released)
# 2. Equivalently:
cur.execute(SELECT)
for row in cur:
print '%s has been publicly available since %d.' % (row[0], row[1])
# 3. Using mapping-iteration rather than sequence-iteration:
cur.execute(SELECT)
for row in cur.itermap():
print '%(name)s has been publicly available since %(year_released)d.' % row例3：
简化的表格打印。
import fdb
TABLE_NAME = 'languages'
SELECT = 'select * from %s order by year_released' % TABLE_NAME
con = fdb.connect(dsn='/temp/test.db', user='sysdba', password='masterkey')
cur = con.cursor()
cur.execute(SELECT)
# Print a header.
for fieldDesc in cur.description:
print fieldDesc[fdb.DESCRIPTION_NAME].ljust(fieldDesc[fdb.DESCRIPTION_DISPLAY_SIZE]) ,
print # Finish the header with a newline.
print '-' * 78
# For each row, print the value of each field left-justified within
# the maximum possible width of that field.
fieldIndices = range(len(cur.description))
for row in cur:
for fieldIndex in fieldIndices:
fieldValue = str(row[fieldIndex])
fieldMaxWidth = cur.description[fieldIndex][fdb.DESCRIPTION_DISPLAY_SIZE]
print fieldValue.ljust(fieldMaxWidth) ,
print # Finish the row with a newline.例4：
插入数据。
import fdb
con = fdb.connect(dsn='/temp/test.db', user='sysdba', password='masterkey')
cur = con.cursor()
newLanguages = [
('Lisp', 1958),
('Dylan', 1995),
]
cur.executemany("insert into languages (name, year_released) values (?, ?)",
newLanguages
)
# The changes will not be saved unless the transaction is committed explicitly:
con.commit()注意上面的参数化sql语句。当执行重复的语句，这种方式比手工组合sql语句速度更快，更不易出错。参考： Prepared Statements.
运行例4后，再运行例3。结果会是这样：
NAME YEAR_RELEASED
------------------------------------------------------------------------------
Lisp 1958
C 1972
Python 1991
Dylan 1995
调用存储过程：
更多内容，请看原文......