Python- Saving files for each loop results

Question

I want to save files for each result from the loop. For example, I wrote the code but it only saves one file which is named "prac10.csv" which contains final results ([20, 12, 69, 31, 88, 40, 18, 71, 93, 19]). epoch=10 randomlist=[] for i in range (epoch): a=randint(1,100) randomlist.append(a) print(randomlist) with open('prac'+str(epoch)+'.csv','w') as f: f.write(str(randomlist)) However, I want to save the prac1.csv ~ prac10.csv with each loop results. prac1.csv : [20] prac2.csv : [20, 12] prac3.csv : [20, 12, 69] ..... prac10.csv : [20, 12, 69, 31, 88, 40, 18, 71, 93, 19] How do I modify my code? Select the correct answer from above options

Answer 1

You are using the fixed variable file name 'prac'+str(epoch)+'.csv' and you are overwriting your file on each iterate, so you need to use a iteration variable for your filename (i in your example): from random import randint epoch = 10 randomlist = [] for i in range(epoch): a = randint(1, 100) randomlist.append(a) print(randomlist) with open('prac'+str(i+1)+'.csv', 'w') as f: f.write(str(randomlist)) Improve your knowledge in data science from scratch using Data science online courses If you wish to learn more about Python, visit the Python tutorial and Python course by Intellipaat.