फ़ंक्शन कोड अखंडता नियंत्रण

 def __init__(self, fileRevision='revision.txt'): self.fileRevision = fileRevision self.mainRevision = self._ReadFromFile(self.fileRevision) # get main revision first 

 def _ReadFromFile(self, file=None): """ Helper function that parse and return revision from file. """ revision = [None, {}] if file == None: file = self.fileRevision try: if os.path.exists(file) and os.path.isfile(file): with open(file) as fH: revision = eval(fH.read()) except: traceback.print_exc() finally: return revision 

 def _WriteToFile(self, revision=[None, {}], file=None): """ Helper procedure than trying to write given revision to file. """ status = False if file == None: file = self.fileRevision try: with open(file, "w") as fH: fH.write(str(revision)) status = True except: traceback.print_exc() finally: return status 

 def _GetOld(self, func=None): """ Get old revision for given function and return tuple: (old_hash, old_source). """ funcHashOld = None # old code is None if function not exist in previous revision funcSourceOld = None # old hash is None if function not exist in previous revision try: if func.__name__ in self.mainRevision[1]: funcHashOld = self.mainRevision[1][func.__name__][0] # field with old hash of function funcSourceOld = self.mainRevision[1][func.__name__][1] # field with old code of function except: traceback.print_exc() finally: return (funcHashOld, funcSourceOld) 

 def _GetNew(self, func=None): """ Get new revision for given function and return tuple: (new_hash, new_source). """ funcSourceNew = None # if function doesn't exist, its also doesn't have code funcHashNew = None # hash is None if function not exist try: funcSourceNew = inspect.getsource(func) # get function's source funcHashNew = hash(funcSourceNew) # new hash of function except: traceback.print_exc() finally: return (funcHashNew, funcSourceNew) 

 def _Similar(self, hashOld, sourceOld, hashNew, sourceNew): """ Checks if given params for modified then return tuple with revision's diff: (old_revision, new_revision), otherwise return None. """ similar = True # old and new functions are similar, by default if hashNew != hashOld: if sourceOld != sourceNew: similar = False # modified if hashes are not similar and functions not contains similar code return similar 

 def Update(self, func=None):    """    Set new revision for function.    revision = [revision date-n-time,                {"funcName1": (funcName1_hash, funcName1_source),                {"funcName2": (funcName2_hash, funcName2_source), ...}]    """    status = False    if func:        try:            funcSourceNew = inspect.getsource(func) # get function's source            funcHashNew = hash(funcSourceNew) # new hash of function            revisionDateNew = datetime.now().strftime('%d.%m.%Y %H:%M:%S') # revision's date            funcRevisionNew = {func.__name__: [funcHashNew, funcSourceNew]} # form for function's revision            self.mainRevision[0] = revisionDateNew # set new date for main revision            self.mainRevision[1].update(funcRevisionNew) # add function's revision to main revision            if self._WriteToFile(self.mainRevision): # write main revision to file                status = True        except:            traceback.print_exc()        finally:            return status 

 def DeleteAll(self): """ Helper function that parse and return revision from file. """ status = False try: self.mainRevision = [None, {}] # clean revision if self._WriteToFile(self.mainRevision): # write main revision to file status = True except: traceback.print_exc() finally: return status 

 def ShowOld(self, func=None): """ Function return old revision for given function. """ funcHashOld, funcSourceOld = self._GetOld(func) # get old revision for given function dateStr = "Last revision: " + str(self.mainRevision[0]) hashStr = "\nOld function's hash: " + str(funcHashOld) codeStr = "\nOld function's code:\n" + "- " * 30 + "\n" + str(funcSourceOld) + "\n" + "- " * 30 oldRevision = dateStr + hashStr + codeStr return oldRevision 

 def ShowNew(self, func=None): """ Function return old revision for given function. """ funcHashNew, funcSourceNew = self._GetNew(func) # get old revision for given function hashStr = "New function's hash: " + str(funcHashNew) codeStr = "\nNew function's code:\n" + "- " * 30 + "\n" + str(funcSourceNew) + "\n" + "- " * 30 newRevision = hashStr + codeStr return newRevision 

 def Diff(self, func=None): """ Checks if given function modified then return tuple with revision's diff: (old_revision, new_revision), otherwise return None. """ funcHashOld, funcSourceOld = self._GetOld(func) # get old revision for given function funcHashNew, funcSourceNew = self._GetNew(func) # get new revision for given function # check old and new revisions: if self._Similar(funcHashOld, funcSourceOld, funcHashNew, funcSourceNew): diff = None # not difference else: diff = ("Last revision: " + str(self.mainRevision[0]) + "\nOld function's hash: " + str(funcHashOld) + "\nOld function's code:\n" + "- " * 30 + "\n" + str(funcSourceOld) + "\n" + "- " * 30, "\nNew function's hash: " + str(funcHashNew) + "\nNew function's code:\n" + "- " * 30 + "\n" + str(funcSourceNew) + "\n" + "- " * 30) # if new function not similar old function return diff 

 def _testFunction(a=None): """ This is fake test function for module. """ # this is comment if a: return True else: return False 

 func = _testFunction # set function for review in revision revision = Revision('revision.txt') # init revision class for using with revision.txt # how to use this module for review revision of function: print(MSG_CHECK, func.__name__) funcModified = revision.Diff(func) # get function's diff as tuple (old_revision, new_revision) if funcModified: print(MSG_MODIFIED) print(funcModified[0]) # old revision print(funcModified[1]) # new revision else: print(MSG_NOT_MODIFIED) # how to use this module for update revision: action = input("Update function's revision? [y/n]: ") if action == 'y': print(MSG_UPDATE, func.__name__) if revision.Update(func): print(MSG_UPDATED) else: print(MSG_UPDATE_ERROR) # how to use this module for clean file-revision: action = input("Clean file-revision now? [y/n]: ") if action == 'y': print(MSG_DELETE) if revision.DeleteAll(): print(MSG_DELETED) else: print(MSG_DELETE_ERROR) # how to use this module for show old review: action = input('Show old revision for function? [y/n]: ') if action == 'y': print(revision.ShowOld(func)) # how to use this module for show new review: action = input('Show new revision for function? [y/n]: ') if action == 'y': print(revision.ShowNew(func))