Retrieving Tktinter Entry Values where GUI is Variable

Since you define the entries like so:

idx = 0
for i in list:
    globals()['label%s' % idx] = Label(root, text=i).grid(row=(idx+1), column=0, sticky=W, padx=12)
    globals()['entry%s' % idx] = Entry(root, text=i).grid(row=(idx+1), column=1, sticky=W, padx=12)
    idx += 1

You need to get the values in the same way so:

for i in range(len(list)):
    globals()["entry_get" + str(i)] = globals()['entry%s' % i].get()

This will save entry 1 to entry_get1 and so on.

If you want to save them to abc etc. you can do:

idx = 0
for i in 'abcdefghijklmno':
    globals()[i] = globals()['entry%s' % idx].get()
    idx+=1

Your function could look like this:

def upload_prices():
    global list
    for i in range(len(list)):
        globals()['entry_get' + str(i)] = globals()['entry%s' % i].get()

I would not recommend using the list keyword as a variable though.

Also, upload_prices is a button and function, that will prove not good. change one or the other like so:

upload_prices_button = Button(root, text="Upload Prices", command=upload_prices)
upload_prices_button.grid(row=16, column=0, padx=10, pady=10)

You also cannot define and grid the entries at the same time so here is the full working code:

from tkinter import *

...

root = Tk()

root.title('Title')

title_label = Label(root, text="Inputs", font=("Helvetica", 14))
title_label.grid(row=0, column=0, columnspan=2, pady="8")

My_list = [i for i in range(10)]

def upload_prices():
    for i in range(len(My_list)):
        globals()['entry_get' + str(i)] = globals()['entry ' + str(i)].get()

idx = 0
for i in My_list:
    globals()['label ' + str(idx)] = Label(root, text=i)
    globals()['label ' + str(idx)].grid(row=(idx+1), column=0, sticky=W, padx=12)
    globals()['entry ' + str(idx)] = Entry(root, text=i)
    globals()['entry ' + str(idx)].grid(row=(idx+1), column=1, sticky=W, padx=12)
    print(globals()['entry ' + str(idx)])
    idx += 1

upload_prices_button = Button(root, text="Upload Prices", command=upload_prices)
upload_prices_button.grid(row=16, column=0, padx=10, pady=10)

root.mainloop()

NOTE: I changed list to My_list.

Another point: I would recommend you a dictionary instead of globals():