def is_number(char):
    numbers = ['0','1','2','3','4','5','6','7','8','9']
    for i in numbers:
        if char == i:
            return True

path = "TaskA04\polish_wiki_excerpt.exp"
file = open(path,"r",encoding="utf8")
count = 0
length = 0
digits = []
digit = ""
all_lines = file.readlines()
for l in all_lines:
    line_length = len(l.strip())
    used = False
    space = False
    count = 0
    i = 0
    for char in l:
       i += 1 
       if i == 1:
           space = True
       if char == " " or line_length == (i-1):
           space = True
           if count != 0:
               if length == 0:
                   length = count
                   digits.append(digit)
               elif count > length:
                   length = count
                   digits.clear()
                   digits.append(digit)
               elif count == length:
                   digits.append(digit)
               digit = ""
               count = 0
       elif is_number(char) == True and space == True:
            count += 1
            digit += char
       else:
            count = 0
            digit = ""

print(digits)        
file.close()