What is wrong in this code

Python
1

I have tried to define a function as per the conditions
all the test case are wrong but when, I tried in ide everything looks normal and fine

        def arithmetic_arranger(problems, cond=False):
    fa = ""
    fb = ""
    fc = ""
    fd = ""
    e = False
    for i in problems:
        l = len(problems)
        if l > 5:
            print("Error: Too many problems.")
            e = True
            break
        a, o, b = i.split()
        try:
            a = int(a)
            b = int(b)
        except:
            print("Error: Numbers must only contain digits.")
            e = True
            break
        if o == "+":
            c = a + b
        elif o == "-":
            c = a - b
        else:
            print("Error: Operator must be '+' or '-'.")
            e = True
            break
        lc = len(str(c))
        la = len(str(a))
        lb = len(str(b))
        m = max(la, lb)
        if m > 4:
            print("Error: Numbers cannot be more than four digits.")
            e = True
            break
        fa += "  " + (m - la) * " " + str(a) + "    "
        fb += o + " " + (m - lb) * " " + str(b) + "    "
        fd += (m + 2) * "-" + "    "
        fc += ((m + 2) - lc) * " " + str(c) + "    "
    if e is True:
        arranged_problems = ""
    elif cond:
        arranged_problems = fa + "\n" + fb + "\n" + fd + "\n" + fc
    else:
        arranged_problems = fa + "\n" + fb + "\n" + fd

    return arranged_problems

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Challenge: Arithmetic Formatter

Link to the challenge:

2

I’ve edited your post for readability. When you enter a code block into a forum post, please precede it with a separate line of three backticks and follow it with a separate line of three backticks to make it easier to read.

You can also use the “preformatted text” tool in the editor (</>) to add backticks around text.

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See this post to find the backtick on your keyboard.
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