# -*- coding: utf-8 -*-
"""
Created on Wed Sep 28 11:16:42 2022

@author: cpresser
"""

#counting for loop

list1 = [5.6, 2.3, -1.5, 7.2]

#value holds a value from the list
for value in list1:
    print(value)
    
#need to change each item
for i in range(len(list1)):
    list1[i] = list1[i]/2
    
print(list1)

#start: -10
#stop: >= 10
#step by 3
for i in range(-10, 10, 3):
    print(i)
    
#turn it into a while loop
#start:
n = -10
while n < 10:  #condition
    #repeat
    print(n)
    #step
    n = n + 3
    
    
#input produces strings
number = float(input("Enter a number: "))
#number = float(number)
print(number)
print(type(number))

#logical operations


x = 6
print(x == 5)
print( not (x == 5))
print( x != 5)


print( 0 <= x < 10)
print( not ( 0 <= x < 10 ) )
print(x < 0 or x >= 10)

#is an item in a list?
print(1 in list1)
print(2.8 in list1)

#del operation
print(list1)
del list1[0]
print(list1)
list1.pop(0)
print(list1)

#nesting
listOlists = [[], [8,4,9], ["hi ", "there"]]
#three items
print(listOlists[1]) #this item is a list
print(listOlists[1][2])

#this is a list
listOlists[0].append(13)
print(len(listOlists[0]))