show_file2.py

import dis, marshal, struct, sys, time, types  
  
def show_file(fname):  
    f = open(fname, "rb")  
    magic = f.read(4)  
    moddate = f.read(4)  
    modtime = time.asctime(time.localtime(struct.unpack('L', moddate)[0]))  
    print "magic %s" % (magic.encode('hex'))  
    print "moddate %s (%s)" % (moddate.encode('hex'), modtime)  
    code = marshal.load(f)  
    show_code(code)  
       
def show_code(code, indent=''):  
    old_indent = indent  
    print "%s<code>" % indent  
    indent += '   '  
    print "%s<argcount> %d </argcount>" % (indent, code.co_argcount)  
    print "%s<nlocals> %d</nlocals>" % (indent, code.co_nlocals)  
    print "%s<stacksize> %d</stacksize>" % (indent, code.co_stacksize)  
    print "%s<flags> %04x</flags>" % (indent, code.co_flags)  
    show_hex("code", code.co_code, indent=indent)  
    print "%s<dis>" % indent  
    dis.disassemble(code)  
    print "%s</dis>" % indent  
  
    print "%s<names> %r</names>" % (indent, code.co_names)  
    print "%s<varnames> %r</varnames>" % (indent, code.co_varnames)  
    print "%s<freevars> %r</freevars>" % (indent, code.co_freevars)  
    print "%s<cellvars> %r</cellvars>" % (indent, code.co_cellvars)  
    print "%s<filename> %r</filename>" % (indent, code.co_filename)  
    print "%s<name> %r</name>" % (indent, code.co_name)  
    print "%s<firstlineno> %d</firstlineno>" % (indent, code.co_firstlineno)  
  
    print "%s<consts>" % indent  
    for const in code.co_consts:  
        if type(const) == types.CodeType:  
            show_code(const, indent+'   ')  
        else:  
            print "   %s%r" % (indent, const)  
    print "%s</consts>" % indent  
  
    show_hex("lnotab", code.co_lnotab, indent=indent)  
    print "%s</code>" % old_indent  
       
def show_hex(label, h, indent):  
    h = h.encode('hex')  
    if len(h) < 60:  
        print "%s<%s> %s</%s>" % (indent, label, h,label)  
    else:  
        print "%s<%s>" % (indent, label)  
        for i in range(0, len(h), 60):  
            print "%s   %s" % (indent, h[i:i+60])  
        print "%s</%s>" % (indent, label)  
  
show_file(sys.argv[1])