75 lines
2.2 KiB
Python
75 lines
2.2 KiB
Python
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import sys
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import inspect
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from pprint import pformat
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from django.conf import settings
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# A debug decorator, written by Paul Butler, taken from
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# http://paulbutler.org/archives/python-debugging-with-decorators/
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# Number of times to indent output
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# A list is used to force access by reference
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__report_indent = [4]
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increment = 2
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def set_indent(i):
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__report_indent[0] = i
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def trace(fn): # renamed from 'report' by henrik 16 Jun 2011
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"""Decorator to print information about a function
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call for use while debugging.
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Prints function name, arguments, and call number
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when the function is called. Prints this information
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again along with the return value when the function
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returns.
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"""
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def fix(s,n=32):
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if len(s) > n+3:
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s = s[:n]+"..."
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s = s.replace('\n',' ')
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return s
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def wrap(*params,**kwargs):
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call = wrap.callcount = wrap.callcount + 1
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indent = ' ' * __report_indent[0]
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fc = "%s(%s)" % (fn.__name__, ', '.join(
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[fix(repr(a)) for a in params] +
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["%s = %s" % (a, fix(repr(b))) for a,b in kwargs.items()]
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))
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print "%s* %s [#%s]" % (indent, fc, call)
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__report_indent[0] += increment
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ret = fn(*params,**kwargs)
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__report_indent[0] -= increment
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print "%s %s [#%s] ==> %s" % (indent, fc, call, repr(ret))
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return ret
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wrap.callcount = 0
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if settings.DEBUG:
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return wrap
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else:
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return fn
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def show(name):
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if settings.DEBUG:
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frame = inspect.stack()[1][0]
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value = eval(name, frame.f_globals, frame.f_locals)
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indent = ' ' * (__report_indent[0])
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print "%s%s: %s" % (indent, name, value)
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def pprint(name):
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if settings.DEBUG:
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frame = inspect.stack()[1][0]
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value = eval(name, frame.f_globals, frame.f_locals)
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indent = ' ' * (__report_indent[0])
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sys.stdout.write("%s%s:\n" % (indent, name))
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lines = pformat(value).split('\n')
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for line in lines:
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sys.stdout.write("%s %s\n"%(indent, line))
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def say(s):
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if settings.DEBUG:
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indent = ' ' * (__report_indent[0])
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print "%s%s" % (indent, s)
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