如何拆分输入以创建字典？

Question

So I'm a complete noob (as in I'm taking my first class rn), and I can't figure out how to do this. I receive an input for a future dictionary key and values corresponding to said key in one line from the user like so:

fruitone = input("Please enter fruit name and values")

The input would be something like: apple 0.5 0.6 1.5. No commas or anything, just good ol' spaces. Eventually, this becomes:

fruits = {'Apple': [0.5, 0.6, 1.5], 'Orange': [0.25, 0.4, 0.05]}

The issue I'm having is figuring out how to split this up so I can transform the input from one whole string into a string and multiple float objects that I can shove into a dictionary. Please help?

Answer 1

dict_ ={}
strA = "apple 0.5 0.6 1.5"
strA = strA.split(' ')

dict_[strA[0]] = strA[1:]

O/p: {'apple': ['0.5', '0.6', '1.5']}

Use your input() as the string strA each time.

split is extremely powerful. You should look up the Python documentation to understand more on how to exploit it.

Answer 2

You could build a dictionary like this

output = {}
latest_thing = "the current fruit"
for thing in fruitone.split(" "):
    if thing.replace('.','',1).isdigit():
        output[latest_thing].append(float(thing))
    else:
        output[thing] = []
        latest_thing = thing

assuming your input look like

apple 0.5 0.6 1.5 orange 0.25 0.4 0.05

Answer 3

fruits = {}


def get_inp():
    inp = input("Please enter fruit name and values: ")
    inp_values = inp.split(" ")
    if len(inp_values) == 4:
        key = inp_values[0]
        try:
            value = list(map(float, inp_values[1:]))
        except ValueError:
            print("Invalid")
            return
        fruits[key] = value
    else:
        print("Invalid")
        return


get_inp()

I'm assuming that you want each fruit to be associated with exactly 3 floats. Take input from the console and split it into a list of strings, dividing at every space. Exit if the resulting list is anything other than 4 elements long (for the fruit and 3 floats), then use map() to try to convert the number inputs to float values and then put them in a list, exiting if the conversion fails. Add the fruit string and resulting float list to the dictionary.

Answer 4

Please check below code:

fruitone = input("Please enter fruit name and values")
fruits = {}
for element in fruitone.split():
    if element.isalpha():
        fruits[element]=[]
        temp = element
    else:
        fruits[temp].append(float(element))
print(fruits)

Input: apple 0.5 0.6 1.5 orange 0.25 0.4 0.05 Output by above code: {'apple': [0.5, 0.6, 1.5], 'orange': [0.25, 0.4, 0.05]}