# Pavan Kumpatla # Dec 13, 2021 # I learned about in and not in, is and is not, and also about precendence # No difficulties

lst_container = [4, 8, 5, 6] # stores value x = 5 # stores value if (x in lst_container): # if x is in lst_container print(x, "is contained in list") # print this else: # else print(x, "is NOT contained in list") # print this x = 10 # stores value if (x in lst_container): # if x is in lst_container print(x, "is contained in list") # print this else: # else print(x, "is NOT contained in list") # print this

lst_container = [4, [7, 3], 'string element'] # stores value # 4 is an element in lst_container x = 4 # stores value print(x, "contained in lst_container:", x in lst_container) # prints, x is in lst_container (true or false) # 7 is an element of a list inside lst_container, but it is NOT an element of the lst_container x = 7 # stores value print(x, "contained in lst_container:", x in lst_container) # prints, x is in lst_container (true or false) # [7, 3] is an element of lst_container x = [7, 3] # stores value print(x, "contained in lst_container:", x in lst_container) # prints, x is in lst_container (true or false)

sentence = "This is a test sentence" # stores value word1 = "test" # stores value word2 = "something" # stores value # testing if word1 is a substring of sentence if (word1 in sentence): # if word1 is in sentence print(word1, "is contained in:", sentence) # print this else: # else print(word1, "is not contained in:", sentence) # print this # testing if word2 is a substring of sentence if (word2 in sentence): # if word2 is in sentence print(word2, "is contained in:", sentence) # print this else: # else print(word2, "is not contained in:", sentence) # print this # another method to test if word2 is a substring of sentence # using the not operator if (word2 not in sentence): # if word2 is not in sentence print(word2, "is not contained in:", sentence) # print this else: # else print(word2, "is contained in:", sentence) # print this

# [ ] Write a program to prompt the user for an integer input between 0 and 100 # then print if the number is contained in `lst` lst = [22, 89, 69, 78, 58, 22, 56, 13, 74, 8, 32, 58, 8, 63, 46, 79, 9, 38, 25, 96] # stores value user = int(input("Enter Integer Input Between 0-100:- ")) # stores user input in int form if user >= 0 and user <= 100: # if user is greater than or equal to 0 and lesser than or equal to 100 if user in lst: # if user in lst print(user, "Is In The List") # print this else: # else print(user, "Is Not In The List") # print this else: # else print("Please Enter A Number Between 0-100!") # print this

# [ ] The `records` list contains information about a company's employees # each of the elements in `records` is a list containing the name and ID of an employee. # Write a program to test if `applicant` is contained in `records` and display an appropriate message # Records of names and IDs records = [['Colette', 22347], ['Skye', 35803], ['Alton', 45825], ['Jin', 24213]] # stores list applicant = ['Joana', 20294] # stores list if applicant in records: # if applicant is in records print(applicant, "Is In The Records!") # print this else: # else print(applicant, "Is Not In The Records!") # print this

# [ ] Write a program to prompt the user for a letter (capital or small) then print if the letter is a vowel # HINT: Use a string containing all the vowels and the `in` or `not in` operator vowels = "AEIOUY" # stores user = input("Enter a Capital or Small Letter:- ").capitalize() # stores user input in capitalized form if user in vowels: # if user in vowels print(user, "is part of the Vowels!") # print this else: # else print(user, "is not part of the Vowels!") # print this

# x, y: equal, identical x = 5 # stores y = 5 # stores print("x equal y ? ", x == y) # prints, x equals y (true or false) print("x is identical to y ?", x is y) # prints, x is y (true or false)

# x, y: not equal, not identical x = 5 # stores y = 6 # stores print("x equal y ? ", x == y) # prints, x equals y (true or false) print("x is identical to y ?", x is y) # prints, x is y (true or false)

# x, y: equal, not identical x = 5.6 # stores y = 5.6 # stores print("x equal y ? ", x == y) # prints, x equals y (true or false) print("x is identical to y ?", x is y) # prints, x is y (true or false)

# x, y: not equal, not identical x = 5.6 # stores y = 10.6 # stores print("x equal y ? ", x == y) # prints, x equals y (true or false) print("x is identical to y ?", x is y) # prints, x is y (true or false)

# Different lists containing the same data x = [4, 9, 8] # stores y = [4, 9, 8] # stores # x and y are equal, because they contain the same data # x and y are NOT identical, because they are saved in different memory locations print("x equal y ? ", x == y) # prints, x equals y (true or false) print("x is identical to y ?", x is y) # prints, x is y (true or false) # Because they are not identical, changing x does not affect y x[1] = 5 # replaces index 1 of x with 5 print() # prints nothing print("After changing x[1]") # prints print("x =", x) # prints print("y =", y) # prints print("x equal y ? ", x == y) # prints, x equals y (true or false) print("x is identical to y ?", x is y) # prints, x is y (true or false)

# Identical list x = [4, 9, 8] # stores y = x # y is x - x is now y # x and y are equal, because they contain the same data # x and y are identical, because they are saved in the same memory location print("x equal y ? ", x == y) # prints, x equals y (true or false) print("x is identical to y ?", x is y) # prints, x is y (true or false) # Because they are identical, changing x also changes y x[1] = 5 # replaces index 1 of x with 5 print() # prints print("After changing x[1]") # prints print("x =", x) # prints print("y =", y) # prints print("x equal y ? ", x == y) # prints, x equals y (true or false) print("x is identical to y ?", x is y) # prints, x is y (true or false)

# s1, s2: equal, not identical s1 = 'whole milk' # stores s2 = 'whole milk' # stores print("s1 equal s2 ? ", s1 == s2) # prints, s1 equals s2 (true or false) print("s1 is identical to s2 ?", s1 is s2) # prints, s1 is s2 (true or false) print("s1 is not identical to s2 ?", s1 is not s2) # prints, s1 is not s2 (true or false)

# s1, s2: equal, identical s1 = 'whole milk' # stores s2 = s1 # s1 is now s2 print("s1 equal s2 ? ", s1 == s2) # prints, s1 equals s2 (true or false) print("s1 is identical to s2 ?", s1 is s2) # prints, s1 is s2 (true or false) print("s1 is not identical to s2 ?", s1 is not s2) # prints, s1 is not s2 (true or false)

# s1, s2: equal, identical (after interpreter optimization) s1 = 'python' # stores s2 = 'python' # stores print("s1 equal s2 ? ", s1 == s2) # prints, s1 equals s2 (true or false) print("s1 is identical to s2 ?", s1 is s2) # prints, s1 is s2 (true or false) print("s1 is not identical to s2 ?", s1 is not s2) # prints, s1 is not s2 (true or false)

# s1, s2: not equal, not identical s1 = 'python' # stores s2 = 'java' # stores print("s1 equal s2 ? ", s1 == s2) # prints, s1 equals s2 (true or false) print("s1 is identical to s2 ?", s1 is s2) # prints, s1 is s2 (true or false) print("s1 is not identical to s2 ?", s1 is not s2) # prints, s1 is not s2 (true or false)

# [ ] Write a program to: # 1) Create a variable `e` that is equal but NOT identical to `s` # 2) Test the equality and identity of `s` and `e` and print the results # 3) Create a variable `i` that is equal and identical to `s` # 4) Test the equality and identity of `s` and `i` and print the results # 5) Test the equality and identity of `e` and `i` and print the results s = "Whole Wheat Bread" #TODO e = "Whole Wheat Bread" # stores print("Check for \"s\" and \"e\"") # prints print("Equal Check:-", e == s) # prints, e equals s print("Indentical Check:-", e is s) # prints, e is s (true or false) i = s # s is now i print() # prints nothing print("Check for \"s\" and \"i\"") # prints print("Equal Check:-", s == i) # prints, s equals i print("Indentical Check:-", s is i) # prints, s is i (true or false) print() # prints nothing print("Check for \"e\" and \"i\"") # prints print("Equal Check:-", e == i) # prints, e equals i print("Indentical Check:-", e is i) # prints, e is i (true or false)

# [ ] Write a program to: # 1) Create a variable `e` that is equal but NOT identical to `x` # 2) Test the equality and identity of `x` and `e` and print the results # 3) Create a variable `i` that is equal and identical to `x` # 4) Test the equality and identity of `x` and `i` and print the results # 5) Test the equality and identity of `e` and `i` and print the results x = [[-1, 2],[3, 4],[-5, 6]] #TODO e = [[-1, 2],[3, 4],[-5, 6]] print("Check for \"x\" and \"e\"") # prints print("Equal Check:-", x == e) # prints, x equals e print("Indentical Check:-", x is e) # prints, x is e (true or false) i = x # x is now i print() # prints nothing print("Check for \"x\" and \"i\"") # prints print("Equal Check:-", x == i) # prints, s equals i print("Indentical Check:-", x is i) # prints, s is i (true or false) print() # prints nothing print("Check for \"e\" and \"i\"") # prints print("Equal Check:-", e == i) # prints, e equals i print("Indentical Check:-", e is i) # prints, e is i (true or false)

# * has higher precedence 2 + 3 * 6 # multiplies, adds

# To change precedence, we add ( ) (2 + 3) * 6 # adds, multiplies

# Arithmetic and relational operations 3 * 2 < 10 # 2 is lesser than 10, multiplies

# Exponentiation has a higher precedence 2**3 + 1 == 16 # 2 to the power of 3 is 8 + 1 is 9 and that does not equal 16

# Adding () changes the precedence of 3 + 1 and the exponentiation operator 2 ** (3 + 1) == 16 # 3 + 1 is 4 so 2 to the power of 4 is 16 and 16 equals 16

# Arithmetic, relational, and Boolean operators 2 ** (3 + 1) == 16 and 3 * 2 < 10 # 3 + 1 is 4, 2 to the power of 4 is 16 # 2 is lesser than 10 and 3 * 2 is 6 # 16 equals 16 # 3 is lesser than 10 # True

# Arithmetic, relational, Boolean, and containment operators 2 ** (3 + 1) != 16 or 3 * 2 in [5, 6, 3] # 2 is not [5, 6, 3] # 3 + 1 is 4, 2 to the power of 4 is 16 # 16 does not equal to 16 # 3 * 2 = 6

# Unexpected outcome! 6 < 10 != True # 6 is lesser than 10 # does not equal to True

# Unexpected outcome! 6 < 10 != False # 6 is lesser than 10 # does not equal to False

# Expected outcome after adding () (6 < 10) != True # 6 is lesser than 10, does not equal True

# [ ] Correct the following expression so the answer is `True` (6 + 2 < 9) == True # 6 + 2 = 8 # 8 < 9 # True

# [ ] Correct the following expression so the answer is `True` 3 ** (2 + 1) >= 3 * (8 + 1) # 2 + 1 = 3 # 3 ^ 3 = 27 # 8 + 1 = 9 # 3 * 9 = 27 # True

# [ ] Correct the following expression so the answer is `True` (5 + 3) * 2 == 16 # 5 + 3 = 8 # 8 * 2 = 16 # 16 = 16 -> True

# [ ] Correct the following expression so the answer is `True` (4 > 3) and (5 + 6 > 7) == True # 4 is greater than 3 # 5 + 6 = 11 -> Greater than 7 # True