int_to_bin_rescursive.py

def int_to_bin(numero, bit=1, string=''):
    str_bit = '1' if bool(numero & bit) else '0'
    string = str_bit + string

    if bit > numero:
        return string
    else:
        return int_to_bin(numero, bit << 1, string)
    
    

print(int_to_bin(1))  		# 01
print(int_to_bin(22)) 		# 010110
print(int_to_bin(100))		# 01100100
print(int_to_bin(1024))		# 010000000000
print(int_to_bin(99999))	# 011000011010011111
print(int_to_bin(123456))	# 011110001001000000