The pyclbr Module

The pyclbr module, shown in Example 14-1, contains a basic Python class parser.

In 1.5.2, the module exports a single function, readmodule, which parses a given module, and returns a list of all classes defined at the modules top level.

Example 14-1. Using the pyclbr Module
File: pyclbr-example-1.py

import pyclbr

mod = pyclbr.readmodule("cgi")

for k, v in mod.items():
 print k, v

MiniFieldStorage 
InterpFormContentDict 
FieldStorage 
SvFormContentDict 
StringIO 
FormContent 
FormContentDict 

In 2.0 and later, theres also an alternative interface, readmodule_ex, which returns global functions as well. This is shown in Example 14-2.

Example 14-2. Using the pyclbr Module to Read Classes and Functions
File: pyclbr-example-3.py

import pyclbr

# 2.0 and later
mod = pyclbr.readmodule_ex("cgi")

for k, v in mod.items():
 print k, v

MiniFieldStorage 
parse_header 
test 
print_environ_usage 
parse_multipart 
FormContentDict 
initlog 
parse 
StringIO 
SvFormContentDict 
...

To get more information about each class, use the various attributes in the Class instances, as Example 14-3 shows.

Example 14-3. Using the pyclbr Module
File: pyclbr-example-2.py

import pyclbr
import string

mod = pyclbr.readmodule("cgi")

def dump(c):
 # print class header
 s = "class " + c.name
 if c.super:
 s = s + "(" + string.join(map(lambda v: v.name, c.super), ", ") + ")"
 print s + ":"
 # print method names, sorted by line number
 methods = c.methods.items()
 methods.sort(lambda a, b: cmp(a[1], b[1]))
 for method, lineno in methods:
 print " def " + method
 print

for k, v in mod.items():
 dump(v)

class MiniFieldStorage:
 def _ _init_ _
 def _ _repr_ _

class InterpFormContentDict(SvFormContentDict):
 def _ _getitem_ _
 def values
 def items

...

Core Modules

More Standard Modules

Threads and Processes

Data Representation

File Formats

Mail and News Message Processing

Network Protocols

Internationalization

Multimedia Modules

Data Storage

Tools and Utilities

Platform-Specific Modules

Implementation Support Modules

Other Modules



Python Standard Library
Python Standard Library (Nutshell Handbooks) with
ISBN: 0596000960
EAN: 2147483647
Year: 2000
Pages: 252
Authors: Fredrik Lundh

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