Printing the output in a file instead of the stdout in python-CodePudding

I am writing a code, where I am generating some rules. Below are the last few lines of my code:

for _,i in enumerate(range(no_of_label 1)):
    
        if _ in temp_key:
        
            rule_pro.append(temp_lab[_])
            
        elif _ == no_of_label:
        
            rule_pro.append(class_)
            
        else:
        
            rule_pro.append("*")
            
    print(*rule_pro, sep = ",")

Now in between the code I am generating 3-4 outputs in the stdout as well. But I need to write this rule_pro into a file say, Outputfile. Whenever I am trying to copy this thing from stdout to that file, everything that is in stdout is getting copied but I only need to bring that rule_pro inside a file. How can I do that? Please help!

Edit_1 :

with open('Output_rule_c45_rise_format', 'w') as file_handler:

file_handler.write(str(rule_pro))

This is working but I am not getting my desired format, which I was getting in stdout using print(*rule_pro, sep = ",").

The stdout output was like:

*,*,1,*,0
*,*,2,2,1
*,*,*,3,1
*,*,*,4,2
*,*,3,*,2

But modifying the code, in that outputfile I am getting like :

['*', '*', '1', '*', '0']['*', '*', '2', '2', '1']['*', '*', '*', '3', '1']['*', '*', '*', '4', '2']['*', '*', '3', '*', '2']

But I don't need these 3rd brackets and I need to print them in separate lines. What changes should I need to make?

Edit_2:

Now I am doing :

for rule in rule_pro:
            #rule_line = ','.join(map(str, rule))
            #rule_line = "\n".join(map(str, rule))
            rule_line = "\n".join(map(str, rule))   '\n'
            file_handler.write(rule_line)

But this is giving the output as:

*
*
1
*
0
*
*
2
2
1
*
*
*
3
1
*
*
*
4
2
*
*
3
*
2

CodePudding user response：

After Edit 1.

It seems that you are writing a string representation of a list into a file. You should first try to create a string out of the list.

The code below should help you convert this. It iterates trough the list and obtaining every item. In this case it seems you have a list with lists and thus your item is a list. After this, a string is joined/created by using every item in rule (which is a list) and then saves it in a variable. The rule_line is a string and can be written to the file. A newline is added so it gets on the next line in the file.

Reference

with open('Output_rule_c45_rise_format', 'w') as file_handler:
    for rule in rule_pro: 
        rule_line = ','.join(map(str, rule))   '\n'
        file_handler.write(rule_line)

This should work assuming that rule_pro is a list of lists.

CodePudding user response：

check docs: Python File Handling:https://www.w3schools.com/python/python_file_handling.asp

Python File Open:https://www.w3schools.com/python/python_file_open.asp

Python File Write:https://www.w3schools.com/python/python_file_write.asp

Python File Delete:https://www.w3schools.com/python/python_file_remove.asp