A VERY unefficient checksum. Works well with strings and tiny files (<1MB)

hash_checksum.py

class myhash:
	"""A VERY unefficient checksum. Works well with strings and tiny files (<1MB)"""
	hexa = ['0','1','2','3','4','5','6','7','8','9','a','b','c','d','e','f']
	def __init__(self, content = ""):
		self.content = content
		self.checksum = ['0']*32
		self.position = 0
		self.update(self.content)
		
	def digest_one(self, to_digest):
		"""Update the 32 numbers of the checksum with 1 character"""
		for a in range(32):
			self.checksum[a] = myhash.hexa[((myhash.hexa.index(self.checksum[a])) + ((ord(to_digest)*101)%32) + 149*a*ord(to_digest) + 1337*int(ord(to_digest)*221)/(a+1))%16]
			
	def update(self, content):
		"""Update the checksum with a string"""
		for a in content:
			self.digest_one(a)
			
	def hexdigest(self):
		"""Return the checksum"""
		string = ''
		for e in self.checksum:
			string += e
		return string