Hash operations | Python Fiddle

#UPDATE

def hashtable_update(htable,key,value):
    bucket = hashtable_get_bucket(htable,key)
    for entry in bucket:
        if entry[0] == key:
            entry[1] = value
            return htable
    bucket.append([key,value])
    return htable

def hashtable_lookup(htable,key):
    bucket = hashtable_get_bucket(htable,key)
    for entry in bucket:
        if entry[0] == key:
            return entry[1]
    return None

def hashtable_add(htable,key,value):
    bucket = hashtable_get_bucket(htable,key)
    bucket.append([key,value])

def hashtable_get_bucket(htable,keyword):
    return htable[hash_string(keyword,len(htable))]

def hash_string(keyword,buckets):
    out = 0
    for s in keyword:
        out = (out + ord(s)) % buckets
    return out

#ALTERNATIVELY

def hash_string(keyword,buckets):
    index = 0
    hash_value = []
    while index < len(keyword):
        for e in keyword:
            hash_value.append(ord(e))
            index = index +1
    return sum(hash_value) % buckets

#END of alternative code

def make_hashtable(nbuckets):
    table = []
    for unused in range(0,nbuckets):
        table.append([])
    return table

table = [[['Ellis', 11], ['Francis', 13]], [], [['Bill', 17], ['Zoe', 14]],
[['Coach', 4]], [['Louis', 29], ['Nick', 2], ['Rochelle', 4]]]

hashtable_update(table, 'Bill', 42)
hashtable_update(table, 'Rochelle', 94)
hashtable_update(table, 'Zed', 68)
print table
#>>> [[['Ellis', 11], ['Francis', 13]], [['Zed', 68]], [['Bill', 42], 
#>>> ['Zoe', 14]], [['Coach', 4]], [['Louis', 29], ['Nick', 2], 
#>>> ['Rochelle', 94]]]

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