I am trying to access a variable within a function in a class and print it. Whenever I try I keep getting the error: AttributeError: 'NoneType' object has no attribute 'job_ID'.
def driver():
q = my_queue.Queue_()
for line in df:
if 'received' in line:
q.enqueue(line)
print("Adding job " + q.new_item.job_ID + " to the queue with the timestamp: " + q.new_item.time_stamp + ".")
print("The prority of the job is: " + q.new_item.job_priority)
print("The job type is: " + q.new_item.job_type)
if 'respond' in line:
q.dequeue()
print("Completed job " + q.current.job_ID + " in " + str(int(q.time_elapsed)) + " seconds.")
if 'active' in line:
q.active_jobs()
print("Total number of jobs: " + str(len(q.temp)))
print("Average priority: " + str(q.average))
if 'modify' in line:
q.modify(line)
print("Modified job " + q.current.job_ID)
The error is coming from the last print statement in this code.
This is the function within the class that is being used here:
def modify(self, x): # need to fix printing bug
self.current = self.head
while self.current != None:
if x[1] in self.current.get_data():
self.current.data[2] = x[2]
self.current.data[3] = x[3]
break
# print("Modified job " + current.job_ID)
else:
# print('The job details cannot be modified.')
pass
self.current = self.current.get_next()
The exit condition for the loop in the modify function that you have provided is self.current == None.
When you call modify() in this last conditional statement:
if 'modify' in line:
q.modify(line) // here
print("Modified job " + q.current.job_ID)
You are making q.current evaluate to None. Therefore, the reason why you are getting an AttributeError is because q.current is None, which has no such attribute called job_ID.
To fix your problem, you must ensure that q.current is not None before printing q.current.job_ID. I can't give you any help beyond this, since I don't know what the purpose of your program is.
Related
I am working on a program that can search wikipedia given an input like: "Who is Elon Musk" - however, with his specific example (and others), when the variable is placed into wikipedia.summary(string), it removes the "l" in "Elon Musk". Attached is my function:
import wikipedia
import spacy
def search_wiki(self, search):
nlp = spacy.load('en_core_web_sm')
doc = nlp(search)
subject_phrase = get_subject_phrase(doc)
try:
results = wikipedia.page(str(subject_phrase)) #removes here
final = results
print(wikipedia.summary(final, sentences=1))
except wikipedia.exceptions.PageError:
results = wikipedia.search(str(subject_phrase))
print("\nDid you mean " + results[0] + "?\n")
possible = results[0]
if input() == "yes":
final = possible
print(final) #prints "Elon Musk"
print(wikipedia.summary(final, sentences=1)) #removes here too
else:
print("\nThese are the other searches that came up for " + str(subject_phrase) + ":\n")
for r in results:
print(r)
print("\nPlease type the result you want me to search for:\n")
final = input()
print(wikipedia.summary(final, sentences=1))
except wikipedia.exceptions.DisambiguationError as e:
print("I couldn't find anything for " + str(subject_phrase) + ". Here are some related results:")
for o in e.options:
print(o)
print("\nWhich of these did you mean?")
final = input()
print(wikipedia.summary(final, sentences=2))
print("\nWould you like to hear more about " + final + "?\n")
if input() == "yes":
print("\nYou can read more about " + final + " at " + wikipedia.page(final).url + "\n")
entry = wikipedia.summary(final, sentences=3)
return lambda: entry, True
else:
entry = wikipedia.summary(final, sentences=1)
return lambda: entry, False`
I am pretty stuck, I have the variable printing right before the call to wikipedia.summary(string), so I know that the variable is not changing on my end (or at least I think).
I have a function which sends a request to a server. But sometimes the server doesn't reply and my code doesn't seem to continue. Now I wanted to implement, that the code continues to run, if no reply is received after a given amount of time. Below the code:
for attempt in range (3):
try:
print('Attempt: ' + str(attempt+1))
print('DUT: ' + str(x))
time.sleep(1)
response = request("http://" + ipEntry.get() + port, "temperature_test", x)
time.sleep(1)
print(response.text)
print(response.data.result)
answer = response.data.result
logFile.write(time.strftime("%Y_%m_%d-%H_%M_%S\t\t") + str(x) + "\t\t" + str(answer) + "\t\t" + str(readVoltage()) + "\t\t" + str(readCurrent()) + "\n")
except:
print('An error occured!')
else:
if (response.data.result==False):
print("Attempt " + str(attempt + 1) + " failed!")
else:
break
else:
print('All 3 attempts failed')
Is it possible to start a counter after the beginning of this function and check with an "if" statement if it has elapsed?
Thanks for any hints and best regards!
Question is:
The assessRent() function above is very handy. The only limitation is that it produces a generic response. Modify the code to do the following:
1)Take a third input called region_name, which is a string
2)Append the appropriate string contained in region_list to your print statement to give a context relevant response
def assessRent(region_list, threshold, region_name):
i = 0
while i < len(region_list):
if region_list[i] < region_name:
if i == 0: # modify the string response below
print("A Bachelor apartment in this region costs " + int(region_list[i]) + " on average, which is affordable")
else: # modify the string response below
print("A " + str(i) + " bedroom apartment in this region costs " + int(region_list[i]) + " on average, which is affordable")
i += 1
Error message:
TypeError: '<' not supported between instances of 'int' and 'str'
I have built a multiprocessing password cracker (using a wordlist) for a specific function, it halved the time needed compared to using a single process.
The original problem being that it would show you the cracked password and terminate the worker, but the remaining workers would carry on until they ran out of words to hash! not ideal.
My new step forward is to use Manager.Event() to terminate the remaining workers, this works as I had hoped (after some trial and error), but the application now takes far longer that it would take as a single process, I'm sure this must be due to the if function inside pwd_find() but I thought I would seek some advice.
#!/usr/bin/env python
import hashlib, os, time, math
from hashlib import md5
from multiprocessing import Pool, cpu_count, Manager
def screen_clear(): # Small function for clearing the screen on Unix or Windows
if os.name == 'nt':
return os.system('cls')
else:
return os.system('clear')
cores = cpu_count() # Var containing number of cores (Threads)
screen_clear()
print ""
print "Welcome to the Technicolor md5 cracker"
print ""
user = raw_input("Username: ")
print ""
nonce = raw_input("Nonce: ")
print ""
hash = raw_input("Hash: ")
print ""
file = raw_input("Wordlist: ")
screen_clear()
print "Cracking the password for \"" + user + "\" using "
time1 = time.time() # Begins the 'Clock' for timing
realm = "Technicolor Gateway" # These 3 variables dont appear to change
qop = "auth"
uri = "/login.lp"
HA2 = md5("GET" + ":" + uri).hexdigest() # This hash doesn't contain any changing variables so doesn't need to be recalculated
file = open(file, 'r') # Opens the wordlist file
wordlist = file.readlines() # This enables us to use len()
length = len(wordlist)
screen_clear()
print "Cracking the password for \"" + user + "\" using " + str(length) + " words"
break_points = [] # List that will have start and stopping points
for i in range(cores): # Creates start and stopping points based on length of word list
break_points.append({"start":int(math.ceil((length+0.0)/cores * i)), "stop":int(math.ceil((length+0.0)/cores * (i + 1)))})
def pwd_find(start, stop, event):
for number in range(start, stop):
if not event.is_set():
word = (wordlist[number])
pwd = word.replace("\n","") # Removes newline character
HA1 = md5(user + ":" + realm + ":" + pwd).hexdigest()
hidepw = md5(HA1 + ":" + nonce +":" + "00000001" + ":" + "xyz" + ":" + qop + ":" + HA2).hexdigest()
if hidepw == hash:
screen_clear()
time2 = time.time() # stops the 'Clock'
timetotal = math.ceil(time2 - time1) # Calculates the time taken
print "\"" + pwd + "\"" + " = " + hidepw + " (in " + str(timetotal) + " seconds)"
print ""
event.set()
p.terminate
p.join
else:
p.terminate
p.join
if __name__ == '__main__': # Added this because the multiprocessor module sometimes acts funny without it.
p = Pool(cores) # Number of processes to create.
m = Manager()
event = m.Event()
for i in break_points: # Cycles though the breakpoints list created above.
i['event'] = event
a = p.apply_async(pwd_find, kwds=i, args=tuple()) # This will start the separate processes.
p.close() # Prevents any more processes being started
p.join() # Waits for worker process to end
if event.is_set():
end = raw_input("hit enter to exit")
file.close() # Closes the wordlist file
screen_clear()
exit()
else:
screen_clear()
time2 = time.time() # Stops the 'Clock'
totaltime = math.ceil(time2 - time1) # Calculates the time taken
print "Sorry your password was not found (in " + str(totaltime) + " seconds) out of " + str(length) + " words"
print ""
end = raw_input("hit enter to exit")
file.close() # Closes the wordlist file
screen_clear()
exit()
Edit (for #noxdafox):
def finisher(answer):
if answer:
p.terminate()
p.join()
end = raw_input("hit enter to exit")
file.close() # Closes the wordlist file
screen_clear()
exit()
def pwd_find(start, stop):
for number in range(start, stop):
word = (wordlist[number])
pwd = word.replace("\n","") # Removes newline character
HA1 = md5(user + ":" + realm + ":" + pwd).hexdigest()
hidepw = md5(HA1 + ":" + nonce +":" + "00000001" + ":" + "xyz" + ":" + qop + ":" + HA2).hexdigest()
if hidepw == hash:
screen_clear()
time2 = time.time() # stops the 'Clock'
timetotal = math.ceil(time2 - time1) # Calculates the time taken
print "\"" + pwd + "\"" + " = " + hidepw + " (in " + str(timetotal) + " seconds)"
print ""
return True
elif hidepw != hash:
return False
if __name__ == '__main__': # Added this because the multiprocessor module sometimes acts funny without it.
p = Pool(cores) # Number of processes to create.
for i in break_points: # Cycles though the breakpoints list created above.
a = p.apply_async(pwd_find, kwds=i, args=tuple(), callback=finisher) # This will start the separate processes.
p.close() # Prevents any more processes being started
p.join() # Waits for worker process to end
You can use the Pool primitives to solve your problem. You don't need to share an Event object which access is synchronised and slow.
Here I give an example on how to terminate a Pool given the desired result from a worker.
You can simply signal the Pool by returning a specific value and terminate the pool within a callback.
I think your hunch is correct. You are checking a synchronization primitive inside a fast loop. I would maybe only check if the event is set every so often. You can experiment to find the sweet spot where you check it enough to not do too much work but not so often that you slow the program down.
I need a way to assign random values to a function, call the function and print the value to the screen.
When I run the code as it is, the enemy's attack and user's defense does not get recalculated. What can I do to have Python recalculate these variables every time the function is called?
import random
enemyName = "Crimson Dragon"
def dragonAtk():
return random.randint(5,10)
def userDef():
return random.randrange(8)
userHp = 100
userName = input("What is your name? ")
enemyAttackname = "Fire Blast"
def enemyAttacks():
global battleDmg
global userHp
global enemyAtk
global userDef
enemyAtk = dragonAtk()
userDef = userDef()
print (">>> " + enemyName + " attacks " + userName + " with " + enemyAttackname + "!")
if enemyAtk < userDef:
print (">>> " + userName + " successfully defended the enemy's attack!")
elif enemyAtk == userDef:
print (">>> " + userName + " successfully parried the enemy's attack!")
else:
battleDmg = enemyAtk - userDef
userHp -= battleDmg
print (">>> " + userName + " takes " + str(battleDmg) + " DMG! "\
+ userName + " has " + str(userHp) + " HP remaining!")
enemyAttacks()
input()
enemyAttacks()
input()
This is my result
What is your name? Murk
>>> Crimson Dragon attacks Murk with Fire Blast!
>>> Murk takes 6 DMG! Murk has 94 HP remaining!
Traceback (most recent call last):
File "C:\Users\Junior\Desktop\python projects\test", line 37, in <module>
enemyAttacks()
File "C:\Users\Junior\Desktop\python projects\test", line 22, in enemyAttacks
userDef = userDef()
TypeError: 'int' object is not callable
>>>
So, I see it ran once through enemyAttacks(), but the second time gave me an error. Not sure what to make of it. Any thoughts?
Here:
userDef = userDef()
You have overridden your function. Thus, when you call the function again, you are trying to call the function, but you have an integer instead (hence the error).
Rename your variable to another name so you don't override your function.