how to use For loop to get a certain value in a list inside a dictionary?

Question

I would like to get certain values from lists inside a dictionary and create a new variable for those values using for loop in Python.

sales = {'c1': [30.2, "lily"], 'c2': [31.3, "sam"], 'c3': [28.2, 'peter'], 'c4': [28.5, 'chan']}

expected output: sales_sum = [30.2, 31.3, 28.2, 28.5]

Answer 1

Try this:

sales_sum = [x[0] for x in sales.values()]

Answer 2

In [28]: sales = {'c1': [30.2, "lily"], 'c2': [31.3, "sam"], 'c3': [28.2, 'peter'], 'c4': [28.5, 'chan']}                                                                                                                                                                                                                     

In [29]: next(zip(*sales.values()))                                                                                                                                                                                                                                                                                           
Out[29]: (30.2, 31.3, 28.2, 28.5)

Answer 3

python_sales = {'c1': [30.2, "lily"], 'c2': [31.3, "sam"], 'c3': [28.2, 'peter'], 'c4': [28.5, 'chan']}
sales_sum=[]
for sale in python_sales.keys():
    sales_sum.append(python_sales[sale][0])

does the trick? (although all other answers here are probably prettier)

Answer 4

list comprehension answers are nice, but if u want more readable:

for v in sales.values():
    sales_sum.append(v[0])