Trying to learn Python. I have a key in a dict where the value is a list. Is it possible to append a string to all items in the list?
value = {
"mything": ["pizza", "burger", "tacos"]
}
category = "food-"
print (value["mything"])
# prints ['pizza', 'burger', 'tacos']
What I want to achieve is this output:
print (value["mything"])
# prints ['food-pizza', 'food-burger', 'food-tacos']
Since you're new, here's a simple loop to get what you need.
for key in iter(value.keys()):
value[key] = ["food-"+ v for v in value[key]]
But, I would prefer this:
value['mything'] = ['food-'+v for v in value['mything']]
Here is a simple approach of how this could be done, partly based on your code:
value = {
"mything": ["pizza", "burger", "tacos"]
}
category = "food-"
results = []
for item in value["mything"]:
results.append(category + item)
print(results)
Output:
$ python3 example.py
['food-pizza', 'food-burger', 'food-tacos']
print(["food-"+i for i in value["mything"]])
You could use list comprehension to prepend the category to all items in the list
print ([category+food for food in value["mything"]])
value['mything'] = [category + x for x in value['mything']]