how to capitalize letter in list object Python

[iwonkawa]

Could you please kindly help me how to capitalize list object from the dictionary ?

shopping_dict = {
    'bakery':['bread', 'doughnut', 'rolls'],
    'greengrocer':['carrot', 'celery, 'arugula'],
}
print("Shopping list:")

for k, v in shopping_dict.items():
    print(f"I'm going to, {k.capitalize()}, I'm buying here:{v}") 

the output should be :

Output:
Shopping list:
I'm going to, Bakery, I'm buying here:['Bread', 'Doughnut', 'Rolls'],
I'm going to, Greengrocer, I'm buying here:['Carrot', 'Celery, 'Arugula']

Thank you for your help

Larz60+ write May-29-2024, 11:46 AM:
Please post all code, output and errors (it it's entirety) between their respective tags. Refer to BBCode help topic on how to post. Use the "Preview Post" button to make sure the code is presented as you expect before hitting the "Post Reply/Thread" button.
Fixed for you this time, also fixed indentation. Please use BBCode tags on future posts.

[menator01]

Use pythons string title()

shopping_dict = {
    'bakery':['bread', 'doughnut', 'rolls'],
    'greengrocer':['carrot', 'celery', 'arugula'],
}
print("Shopping list:")
 
for k, v in shopping_dict.items():
    v = [v.title() for v in v]
    print(f"I'm going to, {k.title()}, I'm buying here:{v}") 

Output

Output:
Shopping list:
I'm going to, Bakery, I'm buying here:['Bread', 'Doughnut', 'Rolls']
I'm going to, Greengrocer, I'm buying here:['Carrot', 'Celery', 'Arugula']

[Pedroski55]

Do it yourself:

shopping_dict = {
    'bakery':['bread', 'doughnut', 'rolls', 'carrotcake', 'biscuits'],
    'greengrocer':['carrot', 'celery', 'arugula', 'chard', 'champignons'],
    'wine shop': ['rioja', 'chardonnay', 'tempranillo', 'carménere']
}

# make the first letter of a word a capital letter
def start_big(word):
    item = word[0].upper() + word[1:]
    return item
 
for key in shopping_dict.keys():
    shopping_dict[key] = [start_big(shopping_dict[key][i]) for i in range(len(shopping_dict[key]))]

for item in shopping_dict.items():
    print(item)

[snippsat]

Pedroski55 as info range(len(sequence)) is to be avoid as is a bad way in most cases.
Also there no need for it your code.

shopping_dict[key] = [start_big(shopping_dict[key][i]) for i in range(len(shopping_dict[key]))]
# Better
shopping_dict[key] = [start_big(item) for item in shopping_dict[key]]

menator01 code is fine,with a helper function can be like this.

shopping_dict = {
    'bakery': ['bread', 'doughnut', 'rolls', 'carrotcake', 'biscuits'],
    'greengrocer': ['carrot', 'celery', 'arugula', 'chard', 'champignons'],
    'wine shop': ['rioja', 'chardonnay', 'tempranillo', 'carménere']
}

def cap_start(word):
    return word.title()

for key in shopping_dict:
    shopping_dict[key] = [cap_start(item) for item in shopping_dict[key]]

for item in shopping_dict.items():
    print(item)

[DeaD_EyE]

A nested dict-list comprehension could do this:

shopping_dict = {
    'bakery': ['bread', 'doughnut', 'rolls', 'carrotcake', 'biscuits'],
    'greengrocer': ['carrot', 'celery', 'arugula', 'chard', 'champignons'],
    'wine shop': ['rioja', 'chardonnay', 'tempranillo', 'carménere']
}

shopping_dict_title = {key: [word.title() for word in words] for key, words in shopping_dict.items()}

For better understanding, you could use more than one line:

shopping_dict_title = {
    key: [word.title() for word in words]
    for key, words in shopping_dict.items()
}

Another approach is the use of list, map, str.title in a dict comprehension:

shopping_dict_title = {
    key: list(map(str.title, words))
    for key, words in shopping_dict.items()
}