Multiprocessing Python Pool.map issue cannot concatenate str with int objects TypeError

Question

I am not able to get to a my function by calling pool.map(func, iterable) syntax. My iterable is nothing but list of numbers on each line (no other comma seprated values like :

LINE01AA1
LINE02AA1
LINE03AA1
LINE04AA1
LINE01AB1
LINE02AB1
LINE03AB1

The code gives an error which is like Error which is thrown : raise self._value TypeError: cannot concatenate 'str' and 'int' objects code is pasted below :

if __name__ == "__main__": 

    # print ID of current process 
    print("ID of process running main program: {}".format(os.getpid())) 

    # print name of main thread 
    print("Main thread name: {}".format('Main')) 

   #Start Time 
    start = time.clock();

    q = Queue()
    filename = 'test.csv'#load file
    load_file(filename)
    print("Total Lines Loaded : " + str(len(my_var)))

    p = Pool(2)
    p.map(getData, my_var)
    p.close()
    p.join()end = time.clock();
    print "The time was {}".format(end - start)

def load_file(filename):
    with open(filename, 'rU') as datafile:
       for line in datafile:
            my_var.append(line.strip())

def getData(number):
    print(number)
    proc_name = current_process().name
    proc = os.getpid()
    print("Process:" + proc_name + " PID: " + proc + "Data : " + number)

    #set Data 
    data['r1[]'] = number[:6]
    data['r2'] = number[6:]
    #print data
    response = requests.post('https://somewebsite/post.php', headers=headers, data=data, proxies=proxies)
    print response.text

What's is the stack trace of the error? And didn't you search for this first? This is a very common error. — Carcigenicate, Jul 31 '19 at 14:08
Is `number` a number? `"Data : " + number` looks suspicious. — Carcigenicate, Jul 31 '19 at 14:10
`print("Process: {} PID: {} Data : {}".format(proc_name, proc, number)` - fixed this for you. PID (`proc` variable) is int for sure, number might be a number (but we can't see that) - using string formatting is universal — h4z3, Jul 31 '19 at 14:13

score 0 · Answer 1 · answered Aug 05 '19 at 06:53

0

Was really a petty overlook, just encapsulated variables in str() in print statements !

answered Aug 05 '19 at 06:53

DaVinci007

83
12

Multiprocessing Python Pool.map issue cannot concatenate str with int objects TypeError

1 Answers1