# -*- coding: utf-8 -*-
"""
Created on Wed Sep 21 10:59:05 2022

@author: cpresser
"""

all_rolls = [0,0,0,0,0,0]
print(all_rolls)

all_rolls = [0]*6
print(all_rolls)

#list compression
#repeat a value
all_rolls = [0 for i in range(6)]
print(all_rolls)

#calculate a value from a range
list = [i for i in range(10)]
print(list)

#calculate a value from another list
odds = [2*n+1 for n in list]
print(odds)

#same thing
odds = []
for n in list:
    odds.append(2*n+1)
print(odds)

#nested loops (one loop inside another)

for i in range(4):
    print(i)    


for i in range(4):  #outer loop
    #repeat a loop
    for j in range(5): #inner loop
        print(f"{i},{j}", end="; ")
    print() # this repeats in outer loop
    
for i in range(4):
    #repeat the loop, up to i
    #first i is 0
    for j in range(i):
        #when i == 0, j is range(0) which is 0 to 0 w/o 0
        #when i == 1, j is range(1)  0 to 1 w/o 1
        #     i == 2, j is range(2)  0 to 2 w/o 2
        print(f"{i},{j}", end=" ")
    print()


#tables of values
# name1 data1,1 data1,2 data1,3
# name2 data2,1 ...
# ...

#e.g Country population by year


#read names from the user
DATA_POINTS = 4 #number of values of data in each "row"
names = []

#initialization
name = input("Enter a name (q to quit): ")

while name != "q":
    #repeat (for each name the user enters)
    #add it to the list
    names.append(name)
    
    #get the data that goes with it
    for i in range(DATA_POINTS):
        value = float(input("Enter a number: "))
        
    #next
    name = input("Enter a name (q to quit): ")

print(names)