Updating A List Word Counter-CodePudding

I'm creating a program that counts letters. I created two dictionaries that both have the same word and, because they are the same exact word, both have the same counter. I want to know how to merge the two dictionaries so that it updates the counters as well, but I consistently receive the result "NONE."

word = 'he'
word2 = 'he'
d1 = {}
d2 = {}

for letter in word:
    if letter in d1:
        d1[letter] =1
    else:
        d1[letter] = 1
print(d1)

#That Outputs: {'h': 1, 'e': 1}


for letter in word2:
    if letter in d2:
        d2[letter] =1
    else:
        d2[letter] = 1
print(d2)

#That Outputs {'h': 1, 'e': 1}



#That Outputs: None

#I want the outputs {'h': 2, 'e': 2}

CodePudding user response：

You can concatenate strings and use a single dictionary:

word1 = 'he'
word2 = 'he'

common_dict = {}
for letter in word1   word2:
    if letter in common_dict:
        common_dict[letter]  = 1
    else:
        common_dict[letter] = 1
print(common_dict)

Also please never use a built-in name as a variable name. In your case, you used dict as a variable name

CodePudding user response：

To merge counters dictionaries d1 and d2:

d = d1.copy()

for k, count in d2:
    if k not in d:
        d[k] = 0
    d[k]  = count

Alternatively:

d = defaultdict(d1, int)

for k, count in d2:
    d[k]  = count