how to construct loop and write files using python-CodePudding

I am writing script to add string A to server1, B to server2 and C to server3.

As per the below script, incorrectly it writes C to all servers.Pls could share insights.

Python Script:

command = []
command.append('server ')
command.append('server1 ')
command.append('server3')

output = ['A','B','C']

for i in command: 
        file = open(i  '_output.txt', 'w')
        file.close()
for j in output: 
    for i in command:
        file = open(i  '_output.txt', 'w')
        file.write(j)
        file.close()

Expected output:

server_output.txt has text "A"
server1_output.txt has text "B"
server2_output.txt has text "C"

CodePudding user response：

you are doing the looping wrong..

think about the last iteration of j variable in the loop

it points to c then inner loop goes through each file and and writes c to them

to fix it you need only one loop

for i in range(len(command)):
    file = open(command[i]  '_output.txt', 'w')
    file.write(output[i])
    file.close()

CodePudding user response：

Follow just Four simple steps and get the solutions.

Step 1 - Opening a text file. df=open('text file','w') ... Step 2 - Adding a test line in the file. df.write('We will be seeing an interated printing of numbers between 0 to 10\n') ... Step 3 - Writing a for loop over the file. for i in range(0,11): df.write(str(i)) df.write('\n') ...

Step 4 - Closing the text file. df.close()