如何在python 3中的文本框数据上进行字符比较

Question

I have looked all over and can't find what I'm looking for. I have recently started learning python but am now stuck on my one project.

I have a text box called self.script_txt1 and I'm trying to write a function that will compare every row in that text box with each other to find the odd character.

I know I will need to use a for loop to do this but I can't figure out how to create the loop so that it will run through each char per line then move on to the next row.

For Example, the data inside self.script_txt1

1111111111111111111111111111111111111111111

1111111111111111111111111111111111111111111

111111111111111111111111111111111a111111111

1111111111111111111111111111111111111111111

11111111a1111111111111111111111111111111111 

1111111111111111111111111111111111111111111

1111111111111111111111111111111111111111111 

1111111111111111111111111111111111111111111 

1111911111111111111111a11111111111111111111 

111111111111111111Z111111111111111111111111 

1111*111*111111111*111*1111111111*111111111 # <-- new inserted line

I would like to find all the characters that are different and insert a new line at the bottom with a * or % to mark the position where the different char was found.

Answer 1

Read comments in code

text = '''1111111111111111111111111111111111111111111
1111111111111111111111111111111111111111111
111111111111111111111111111111111a111111111
1111111111111111111111111111111111111111111
11111111a1111111111111111111111111111111111
1111111111111111111111111111111111111111111
1111111111111111111111111111111111111111111
1111111111111111111111111111111111111111111
1111911111111111111111a11111111111111111111
111111111111111111Z111111111111111111111111'''

# split text into lines
lines = text.split('\n')

# find length of the longest line
length = max(len(line) for line in lines)
print('length:', length)

# create new line with `1`s (or rather create list with `1`s)
result = ['1']*length
print(' start:', ''.join(result))

# search for chars in lines

# get line-by-line
for line in lines:
    # get char-by-char in line (and enumerate it)
    for idx, char in enumerate(line):
        # check char
        if char != '1': # if char not in ('1', 'x', 'y'):
            # put `*` in correct place in new line
            result[idx] = '*'
            #print('found:', idx, char)

# display new line
new_line = ''.join(result)
print('result:', new_line)

Result:

length: 43
 start: 1111111111111111111111111111111111111111111
result: 1111*111*111111111*111*1111111111*111111111

Now you have to only get text from textbox and add new line at the end.