Need help with threads in for loop

[yestoprince]

Hello Friends,

I am using a nested loop first loop iterate for 50,000 times and second loop iterate for 500 times if i use normal approach
i.e.

for i in range(0,50000):
    for j in range(0,250)
        print(i,j)

It is taking huge time so can any one tell me how can i execute this nested for loop faster? can you please share the code as well

i am using this code but not very much fast.

import time

from threading import Thread

class GetMyThread(Thread):
    def __init__(self, start, end, start2, end2):
        self.ix = start 
        self.iy= end
        self.jx = start2
        self.jy = end2
        super(GetMyThread, self).__init__()
        for i in range(self.ix, self.iy):
            for j in range(0, len(overallKeywordsFrequency)):
                    if(overallKeywordsFrequency[j] in (df.iloc[i]['Keywords'].lower().strip())):
                        matrix[i,j] = 1
       
        
        
                

def get_responses():
    start = time.time()
    threads = []
    num_splits = 50
    split_size = len(df)//num_splits
    split_size2 = len(overallKeywordsFrequency)//num_splits
    for i in  range(num_splits):
        start = i * split_size
        start2 = i * split_size2
        end = len(df) if i+1 == num_splits else (i+1) * split_size
        end2 = len(overallKeywordsFrequency) if i+1 == num_splits else (i+1) * split_size2
        t = GetMyThread(start, end, start2, end2)
        threads.append(t)
        t.start()
    for t in threads:
        t.join()

get_responses()