Python代码调试的方法

import pdb 
 a = "aaa"
 pdb.set_trace() 
 b = "bbb"
 c = "ccc"
 final = a + b + c 
 print final

[root@rcc-pok-idg-2255 ~]# python epdb1.py 
 > /root/epdb1.py(4)?() 
 -> b = "bbb"
 (Pdb) n 
 > /root/epdb1.py(5)?() 
 -> c = "ccc"
 (Pdb) 
 > /root/epdb1.py(6)?() 
 -> final = a + b + c 
 (Pdb) list 
 1 import pdb 
 2 a = "aaa"
 3 pdb.set_trace() 
 4 b = "bbb"
 5 c = "ccc"
 6 -> final = a + b + c 
 7 print final 
 [EOF] 
 (Pdb) 
 [EOF] 
 (Pdb) n 
 > /root/epdb1.py(7)?() 
 -> print final 
 (Pdb)

[root@rcc-pok-idg-2255 ~]# python epdb1.py 
 > /root/epdb1.py(4)?() 
 -> b = "bbb"
 (Pdb) n 
 > /root/epdb1.py(5)?() 
 -> c = "ccc"
 (Pdb) q 
 Traceback (most recent call last): 
 File "epdb1.py", line 5, in ? 
 c = "ccc"
 File "epdb1.py", line 5, in ? 
 c = "ccc"
 File "/usr/lib64/python2.4/bdb.py", line 48, in trace_dispatch 
 return self.dispatch_line(frame) 
 File "/usr/lib64/python2.4/bdb.py", line 67, in dispatch_line 
 if self.quitting: raise BdbQuit 
 bdb.BdbQuit

[root@rcc-pok-idg-2255 ~]# python epdb1.py 
 > /root/epdb1.py(4)?() 
 -> b = "bbb"
 (Pdb) n 
 > /root/epdb1.py(5)?() 
 -> c = "ccc"
 (Pdb) p b 
'bbb'
 (Pdb) 
'bbb'
 (Pdb) n 
 > /root/epdb1.py(6)?() 
 -> final = a + b + c 
 (Pdb) p c 
'ccc'
 (Pdb) p final 
 *** NameError: <exceptions.NameError instance at 0x1551b710 > 
 (Pdb) n 
 > /root/epdb1.py(7)&#63;() 
 -> print final 
 (Pdb) p final 
'aaabbbccc'
 (Pdb)

[root@rcc-pok-idg-2255 ~]# python epdb1.py 
 > /root/epdb1.py(4)?() 
 -> b = "bbb"
 (Pdb) n 
 > /root/epdb1.py(5)?() 
 -> c = "ccc"
 (Pdb) c 
 aaabbbccc

[root@rcc-pok-idg-2255 ~]# python epdb1.py 
 > /root/epdb1.py(4)?() 
 -> b = "bbb"
 (Pdb) list 
  import pdb 
  a = "aaa"
  pdb.set_trace() 
 -> b = "bbb"
  c = "ccc"
  final = a + b + c 
  pdb.set_trace() 
  print final 
 [EOF] 
 (Pdb) c 
 > /root/epdb1.py(8)?() 
 -> print final 
 (Pdb) list 
  pdb.set_trace() 
  b = "bbb"
  c = "ccc"
  final = a + b + c 
  pdb.set_trace() 
 -> print final 
 [EOF] 
 (Pdb)

import pdb 
 def combine(s1,s2): # define subroutine combine, which... 
 s3 = s1 + s2 + s1 # sandwiches s2 between copies of s1, ... 
 s3 = '"' + s3 +'"' # encloses it in double quotes,... 
 return s3  # and returns it. 
 a = "aaa"
 pdb.set_trace() 
 b = "bbb"
 c = "ccc"
 final = combine(a,b) 
 print final

[root@rcc-pok-idg-2255 ~]# python epdb2.py 
 > /root/epdb2.py(10)?() 
 -> b = "bbb"
 (Pdb) n 
 > /root/epdb2.py(11)?() 
 -> c = "ccc"
 (Pdb) n 
 > /root/epdb2.py(12)?() 
 -> final = combine(a,b) 
 (Pdb) s 
 --Call-- 
 > /root/epdb2.py(3)combine() 
 -> def combine(s1,s2): # define subroutine combine, which... 
 (Pdb) n 
 > /root/epdb2.py(4)combine() 
 -> s3 = s1 + s2 + s1 # sandwiches s2 between copies of s1, ... 
 (Pdb) list 
  import pdb 
 
  def combine(s1,s2): # define subroutine combine, which... 
 -> s3 = s1 + s2 + s1 # sandwiches s2 between copies of s1, ... 
  s3 = '"' + s3 +'"' # encloses it in double quotes,... 
  return s3  # and returns it. 
 
  a = "aaa"
  pdb.set_trace() 
  b = "bbb"
  c = "ccc"
 (Pdb) n 
 > /root/epdb2.py(5)combine() 
 -> s3 = '"' + s3 +'"' # encloses it in double quotes,... 
 (Pdb) n 
 > /root/epdb2.py(6)combine() 
 -> return s3  # and returns it. 
 (Pdb) n 
 --Return-- 
 > /root/epdb2.py(6)combine()->'"aaabbbaaa"'
 -> return s3  # and returns it. 
 (Pdb) n 
 > /root/epdb2.py(13)?() 
 -> print final 
 (Pdb)

[root@rcc-pok-idg-2255 ~]# python epdb2.py 
 > /root/epdb2.py(10)?() 
 -> b = "bbb"
 (Pdb) var = "1234"
 (Pdb) b = "avfe"
 *** The specified object '= "avfe"' is not a function 
 or was not found along sys.path. 
 (Pdb) !b="afdfd"
 (Pdb)

__author__ = 'zhangying'
 #!/usr/bin/python 
 import thread 
 import time 
 # Define a function for the thread 
 def print_time( threadName, delay): 
 count = 0 
 while count < 5: 
 count += 1 
 print "%s: %s" % ( threadName, time.ctime(time.time()) ) 
 def check_sum(threadName,valueA,valueB): 
 print "to calculate the sum of two number her"
 result=sum(valueA,valueB) 
 print "the result is" ,result; 
 def sum(valueA,valueB): 
 if valueA >0 and valueB>0: 
 return valueA+valueB 
 def readFile(threadName, filename): 
 file = open(filename) 
 for line in file.xreadlines(): 
 print line 
 try: 
 thread.start_new_thread( print_time, ("Thread-1", 2, ) ) 
 thread.start_new_thread( check_sum, ("Thread-2", 4,5, ) ) 
 thread.start_new_thread( readFile, ("Thread-3","test.txt",)) 
 except: 
 print "Error: unable to start thread"
 while 1: 
 # 	 print "end"
 pass

#!/usr/bin/env python 
 import os 	 
 def telnetdo(HOST=None, USER=None, PASS=None, COMMAND=None): #define a function 
	 import telnetlib, sys 
	 if not HOST: 
		 try: 
			 HOST = sys.argv[1] 
			 USER = sys.argv[2] 
			 PASS = sys.argv[3] 
			 COMMAND = sys.argv[4] 
		 except: 
			 print "Usage: remote.py host user pass command"
			 return 
	 tn = telnetlib.Telnet() # 
	 try: 
		 tn.open(HOST) 
	 except: 
		 print "Cannot open host"
		 return 
	 tn.read_until("login:") 
	 tn.write(USER + '\n') 
	 if PASS: 
		 tn.read_until("Password:") 
		 tn.write(PASS + '\n') 
		 tn.write(COMMAND + '\n') 
		 tn.write("exit\n") 
		 tmp = tn.read_all() 
		 tn.close() 
		 del tn 
		 return tmp 
		
 if __name__ == '__main__': 
	 print telnetdo()

import logging 
 LOG1=logging.getLogger('b.c') 
 LOG2=logging.getLogger('d.e') 
 filehandler = logging.FileHandler('test.log','a') 
 formatter = logging.Formatter('%(name)s %(asctime)s %(levelname)s %(message)s') 
 filehandler.setFormatter(formatter) 
 filter=logging.Filter('b') 
 filehandler.addFilter(filter) 
 LOG1.addHandler(filehandler) 
 LOG2.addHandler(filehandler) 
 LOG1.setLevel(logging.INFO) 
 LOG2.setLevel(logging.DEBUG) 
 LOG1.debug('it is a debug info for log1') 
 LOG1.info('normal infor for log1') 
 LOG1.warning('warning info for log1:b.c') 
 LOG1.error('error info for log1:abcd') 
 LOG1.critical('critical info for log1:not worked') 
 LOG2.debug('debug info for log2') 
 LOG2.info('normal info for log2') 
 LOG2.warning('warning info for log2') 
 LOG2.error('error:b.c') 
 LOG2.critical('critical')

logging.conf 
 [loggers] 
 keys=root,simpleExample 

 [handlers] 
 keys=consoleHandler 

 [formatters] 
 keys=simpleFormatter 

 [logger_root] 
 level=DEBUG 
 handlers=consoleHandler 

 [logger_simpleExample] 
 level=DEBUG 
 handlers=consoleHandler 
 qualname=simpleExample 
 propagate=0 

 [handler_consoleHandler] 
 class="StreamHandler" 
 level=DEBUG 
 formatter=simpleFormatter 
 args=(sys.stdout,) 

 [formatter_simpleFormatter] 
 format=%(asctime)s - %(name)s - %(levelname)s - %(message)s 
 datefmt= 

 code example: 
 #!/usr/bin/python 
 import thread 
 import time 
 import logging 
 import logging.config 
 logging.config.fileConfig('logging.conf') 
 # create logger 
 logger = logging.getLogger('simpleExample') 
 # Define a function for the thread 
 def print_time( threadName, delay): 
	 logger.debug('thread 1 call print_time function body') 
	 count = 0 
	 logger.debug('count:%s',count)