f_in = open("in.txt", "r")

f_out = open("out.txt", "w")

INDENT = 4

brace_count = 0#number of {

bracket_count=0

write_for_brakcet = False

for line in f_in:

    for i in range(len(line)):

        if write_for_brakcet:

            if line[i]==']':

                write_for_brakcet = False

            f_out.write(line[i])

            continue

        if line[i]=='{':

            brace_count = brace_count + 1

            f_out.write('{\n'+' '*INDENT*(brace_count+bracket_count))            

        elif line[i]=='[':           

            if line[i+1]=='{':

                bracket_count = bracket_count + 1

                f_out.write('[\n'+' '*INDENT*(brace_count+bracket_count))

            else:

                write_for_brakcet = True

                f_out.write('[')

        elif line[i]=='}':

            brace_count = brace_count - 1

            if i<len(line)-1 and line[i+1]==',':

                f_out.write('}')

            elif i<len(line)-1 and line[i+1]==']':

                f_out.write('}\n'+' '*INDENT*(brace_count+bracket_count-1))

            else:

                f_out.write('}\n'+' '*INDENT*(brace_count+bracket_count))

        elif line[i]==']':

            bracket_count = bracket_count - 1

            if i<len(line)-1 and line[i+1]=='}':

                f_out.write(']\n'+' '*INDENT*(brace_count+bracket_count-1))

            else:

                f_out.write(']\n'+' '*INDENT*(brace_count+bracket_count))

        elif line[i]==',':

            if line[i+1]=='}':

                f_out.write(','+' '*INDENT*(brace_count+bracket_count))

            else:

                f_out.write(',')

        elif line[i]==' ' and line[i-1]==',':

            f_out.write('\n'+' '*INDENT*(brace_count+bracket_count))

        elif i<len(line)-1 and line[i+1]=='}':

            f_out.write(line[i]+'\n'+' '*INDENT*(brace_count+bracket_count-1))

        else:

            f_out.write(line[i])

f_in.close()

f_out.close()