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33ea81c
updated
DmitriyMalayev Aug 31, 2024
33d1081
update
DmitriyMalayev Aug 31, 2024
334914c
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DmitriyMalayev Sep 1, 2024
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176 changes: 88 additions & 88 deletions lesson04/data_types.py
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Original file line number Diff line number Diff line change
Expand Up @@ -3,8 +3,8 @@

# literal assignment

first = "Dave"
last = "Gray"
# first = "Dave"
# last = "Gray"

# print(type(first))
# print(type(first) == str)
Expand All @@ -17,120 +17,120 @@
# print(isinstance(pizza, str))

# Concatenation
fullname = first + " " + last
print(fullname)
# fullname = first + " " + last
# print(fullname)

fullname += "!"
print(fullname)
# fullname += "!"
# print(fullname)

# Casting a number to a string
decade = str(1980)
print(type(decade))
print(decade)
# # Casting a number to a string
# decade = str(1980)
# print(type(decade))
# print(decade)

statement = "I like rock music from the " + decade + "s."
print(statement)
# statement = "I like rock music from the " + decade + "s."
# print(statement)

# Multiple lines
multiline = '''
Hey, how are you?
# # Multiple lines
# multiline = '''
# Hey, how are you?

I was just checking in.
All good?
# I was just checking in.
# All good?

'''
print(multiline)
# '''
# print(multiline)

# Escaping special characters
sentence = 'I\'m back at work!\tHey!\n\nWhere\'s this at\\located?'
print(sentence)
# # Escaping special characters
# sentence = 'I\'m back at work!\tHey!\n\nWhere\'s this at\\located?'
# print(sentence)

# String Methods
# # String Methods

print(first)
print(first.lower())
print(first.upper())
print(first)
# print(first)
# print(first.lower())
# print(first.upper())
# print(first)

print(multiline.title())
print(multiline.replace("good", "ok"))
print(multiline)
# print(multiline.title())
# print(multiline.replace("good", "ok"))
# print(multiline)

print(len(multiline))
multiline += " "
multiline = " " + multiline
print(len(multiline))
# print(len(multiline))
# multiline += " "
# multiline = " " + multiline
# print(len(multiline))

print(len(multiline.strip()))
print(len(multiline.lstrip()))
print(len(multiline.rstrip()))
# print(len(multiline.strip()))
# print(len(multiline.lstrip()))
# print(len(multiline.rstrip()))

print("")
# print("")

# Build a menu
title = "menu".upper()
print(title.center(20, "="))
print("Coffee".ljust(16, ".") + "$1".rjust(4))
print("Muffin".ljust(16, ".") + "$2".rjust(4))
print("Cheesecake".ljust(16, ".") + "$4".rjust(4))
# # Build a menu
# title = "menu".upper()
# print(title.center(20, "="))
# print("Coffee".ljust(16, ".") + "$1".rjust(4))
# print("Muffin".ljust(16, ".") + "$2".rjust(4))
# print("Cheesecake".ljust(16, ".") + "$4".rjust(4))

print("")
# print("")

# string index values
print(first[1])
print(first[-1])
print(first[1:-1])
print(first[1:])
# # string index values
# print(first[1])
# print(first[-1])
# print(first[1:-1])
# print(first[1:])

# Some methods return boolean data
print(first.startswith("D"))
print(first.endswith("Z"))
# # Some methods return boolean data
# print(first.startswith("D"))
# print(first.endswith("Z"))


# Boolean data type
myvalue = True
x = bool(False)
print(type(x))
print(isinstance(myvalue, bool))
# # Boolean data type
# myvalue = True
# x = bool(False)
# print(type(x))
# print(isinstance(myvalue, bool))

# Numeric data types
# # Numeric data types

# integer type
price = 100
best_price = int(80)
print(type(price))
print(isinstance(best_price, int))
# # integer type
# price = 100
# best_price = int(80)
# print(type(price))
# print(isinstance(best_price, int))

# float type
gpa = 3.28
y = float(1.14)
print(type(gpa))
# # float type
# gpa = 3.28
# y = float(1.14)
# print(type(gpa))

# complex type
comp_value = 5+3j
print(type(comp_value))
print(comp_value.real)
print(comp_value.imag)
# # complex type
# comp_value = 5+3j
# print(type(comp_value))
# print(comp_value.real)
# print(comp_value.imag)

# Built-in functions for numbers
# # Built-in functions for numbers

print(abs(gpa))
print(abs(gpa * -1))
# print(abs(gpa))
# print(abs(gpa * -1))

print(round(gpa))
# print(round(gpa))

print(round(gpa, 1))
# print(round(gpa, 1))


print(math.pi)
print(math.sqrt(64))
print(math.ceil(gpa))
print(math.floor(gpa))
# print(math.pi)
# print(math.sqrt(64))
# print(math.ceil(gpa))
# print(math.floor(gpa))

# Casting a string to a number
zipcode = "10001"
zip_value = int(zipcode)
print(type(zip_value))
# # Casting a string to a number
# zipcode = "10001"
# zip_value = int(zipcode)
# print(type(zip_value))

# Error if you attempt to cast incorrect data
# zip_value = int("New York")
# # Error if you attempt to cast incorrect data
# # zip_value = int("New York")
7 changes: 3 additions & 4 deletions lesson05/rps.py
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Original file line number Diff line number Diff line change
Expand Up @@ -10,8 +10,7 @@ class RPS(Enum):


print("")
playerchoice = input(
"Enter...\n1 for Rock,\n2 for Paper, or \n3 for Scissors:\n\n")
playerchoice = input("Enter...\n1 for Rock,\n2 for Paper, or \n3 for Scissors:\n\n")

player = int(playerchoice)

Expand All @@ -23,8 +22,8 @@ class RPS(Enum):
computer = int(computerchoice)

print("")
print("You chose " + str(RPS(player)).replace('RPS.', '') + ".")
print("Python chose " + str(RPS(computer)).replace('RPS.', '') + ".")
print("You chose " + str(RPS(player)).replace("RPS.", "") + ".")
print("Python chose " + str(RPS(computer)).replace("RPS.", "") + ".")
print("")

if player == 1 and computer == 3:
Expand Down
93 changes: 55 additions & 38 deletions lesson06/lists.py
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Original file line number Diff line number Diff line change
@@ -1,71 +1,79 @@
users = ['Dave', 'John', 'Sara']
users = ["John", "Sara", "Dave"]

data = ['Dave', 42, True]
data = ["Dave", 42, True]

emptylist = []

print("Dave" in emptylist)
# print("Dave" in emptylist)

print(users[0])
print(users[-2])
# print(users[0])
# print(users[-2])

print(users.index('Sara'))
# print(users.index('Sara'))

print(users[0:2])
print(users[1:])
print(users[-3:-1])
# print(users[0:2])
# print(users[1:])
# print(users[-3:-1])

print(len(data))
# print(len(data))

users.append('Elsa')
print(users)
# users.append('Elsa')
# print(users)

users += ['Jason']
print(users)
# users += ['Jason']
# print(users)

users.extend(['Robert', 'Jimmy'])
print(users)

# users.extend(data)
# users.extend(['Robert', 'Jimmy'])
# print(users)

users.insert(0, 'Bob')
print(users)
# # users.extend(data)
# # print(users)

users[2:2] = ['Eddie', 'Alex']
print(users)
# users.insert(0, 'Bob') #Added to beginning of the list
# print(users)

users[1:3] = ['Robert', 'JPJ']
print(users)
# users[2:2] = ['Eddie', 'Alex'] #Added not replaced anyone
# print(users)

users.remove('Bob')
print(users)
# users[1:3] = ['Robert', 'JPJ'] #replaced two values
# print(users)

print(users.pop())
print(users)
# users.remove('Bob') #first user
# print(users)

del users[0]
print(users)
# print(users.pop()) #last user. Returns user removed.
# print(users)

# del users[0] #specify index
# print(users)

# # del data
# print(data) #error

# del data
data.clear()
print(data)
# data.clear() #empties list but list exists
# print(data)
print(users)

users[1:2] = ['dave']
users[1:2] = ["dave"]
print(users)
users.sort()
print(users)

users.sort(key=str.lower)
print(users)

nums = [4, 42, 78, 1, 5]
nums = [4, 40, 42, 78, 1, 5, 100]
nums.sort()
print(nums)

nums.reverse()
print(nums)

# nums.sort(reverse=True)
# print(nums)

print(sorted(nums, reverse=True))
print(sorted(nums, reverse=True)) # doesn't mutate
print(nums)

numscopy = nums.copy()
Expand All @@ -85,7 +93,7 @@

# Tuples

mytuple = tuple(('Dave', 42, True))
mytuple = tuple(("Dave", 42, True))

anothertuple = (1, 4, 2, 8, 2, 2)

Expand All @@ -94,7 +102,8 @@
print(type(anothertuple))

newlist = list(mytuple)
newlist.append('Neil')
anotherTuple = list()
anotherTuple.append("Neil")
newtuple = tuple(newlist)
print(newtuple)

Expand All @@ -103,4 +112,12 @@
print(two)
print(hey)

print(anothertuple.count(2))
print(anothertuple.count(2)) # returns number of occurences


# Lists and Tuples
# Lists use [] and are mutable
# Tuples use () and are immutable
# They both are ordered, have indexing / slicing methods, and duplicate elements
# Sets
# Sets are not ordered, not index based, don't have duplicate elements
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