Vocabulary Variable | Holds a value and can be change | String | a list of characters such as numbers, letters, symbols | Integer number | Whole number/counting number | Float number | Number in decimal | Syntax | Grammar/Structure of language | Boolean | True/False | length | the length of the string | Function Print() | Show information that you want on screen | Int() | Change number to be number integer | input() | receives info from the user | str() | converts the value to a string | float() | converts the value to a floating point | len() | The length of the string | # | comment,no effect | ''' | Multi-line comment | Multiplication and Exponents string * number | stringsting...(number) | string* string | Fail!! | number * number | Multiply | string ** string | Fail!! | number ** number | Exponent | string ** number | Fail!! | Convert to Binary String user_number = ' '
while user_name != ' '
user_number = input("Enter a number to convert to binary")
number = int(user_number)
binary_string = ' '
while (number > 0)
remainder = number%2
binary_string = str(remainder)+binary_string
number = number//2
print ("Binary string is", binary_string) Simple Function def printdefinitions(word): if word == ("variable"): print ("""A variable is the value that can change""") elif word == ("function"): print ("""A function is the blog of code that can be reused""") elif word == ("parameter"): print ("""A parameter is something given to the function""") elif word == ("agrument"): print ("""An agrument is something given to the function""") elif word == ("string"): print ("""A string is a lsit of characters""") elif word == ("function call"): print ("""A function call makes your function run""") else: print ("Unknown word") return while True: #keep the loop go forever user_input = input("Enter word: ") printdefinitions(user_input)
| Simple Function def printdefinitions(word): if word == ("variable"): print ("""A variable is the value that can change""") elif word == ("function"): print ("""A function is the blog of code that can be reused""") elif word == ("parameter"): print ("""A parameter is something given to the function""") elif word == ("agrument"): print ("""An agrument is something given to the function""") elif word == ("string"): print ("""A string is a lsit of characters""") elif word == ("function call"): print ("""A function call makes your function run""") else: print ("Unknown word") return while True: #keep the loop go forever user_input = input("Enter word: ") printdefinitions(user_input) Enter word: hello Unknown word Enter word: function A function is the blog of code that can be reused Enter word: variable A variable is the value that can change Enter word: area/volume of
| | | Symbols == | equal to | != | not equal to | < | less than | <= | less than or equal to | > | greater than | >= | greater than or equal to | + | add | - | subtract | * | multiply | / | divide and quotient is float | // | divide and quotient is integer | ** | exponent | % | modulo: the remainder | Addition string + string | combine together | string + number | Fail | number + number | plus | number - number | minus | Sample code mystr = "hellp THERE" print (mystr.upper()) -all letters will become big HELP THREE print (mystr.lower()) -all letters will become small help three print (mystr.capitalize()) -First letter of first word will become big Help three print (mystr.title())- first letter of each words will become big Help Three
| Example Print (2) – integer
Print (2.5) – floating point
Print (“Hello”) – string
Print (mystr) – variable
Print (mystr,”Hi”,2,1.0) -- commas
mystr = “Hi”
mystr ← name
“Hi” ← value can change
print (int(1.5)) → 1
print (int(“2”)) → 2
print (float(1)) → 1.0 anything to a float
Modulo/Remainder %
print (4%2) → 0
print (30%7) → 2 Area of the circle def areaOfCircle(r):
pi = 3.1415
area = pir*2
return area
user_radius = float (input("Enter the radius: "))
print ('The area of the circle is',areaOfCircle(user_radius)) MaxValue def max2(num1,num2): maxvalue = num1 if num2 > maxvalue: maxvalue = num2 return maxvalue print (max2(4,5)) print (max2(33,5)) def max3(num1,num2,num3): maxvalue = num1 if num2 > maxvalue: maxvalue = num2 if num3 > maxvalue: maxvalue = num3 return maxvalue print (max3(1,2,3)) 5 33 3
| Maxlist def maxlist(list): maxvalue = list[0] for item in list: if item > maxvalue: maxvalue = item return maxvalue mylist = [1,2,3,4,55,66,777,0,1] print(maxlist(mylist)) 777
| | | Naming Conventions Rule for giving name -letter -numbers -underscore_ Valid name - _myStr - my3 - Hello_there Invalid name - 3my="hi" -- cannot start with number - first name = "hi" - first-name - first+name
| Capital letter name = "tim GIRARD"
print (name.upper()) → TIM GIRARD
print (name.lower()) → tim girard
print (name.capitalize()) → Tim girard
print (name.title()) → Tim Girard circle area def areaofcircle(radius): if radius <= 0: return "Error: invalid raadius" pi = 3.1415 area = pi (radius*2) return area user_radius = float(input("Enter the radius: ")) print('The area of the circle is', areaofcircle(user_radius)) Enter the radius: 2 The area of the circle is 12.566 Enter the radius: 0 The area of the circle is Error: invalid raadius
| Countdown Number user_number = input("Please enter the number")
number = int(user_number)
countdown_string = ""
while number>0:
countdown_string = countdown_string + str(number)
number = number - 1
print (countdown_string) Palindrome def isPalindrome(word): reverse = "" letter_num=0 while letter_num<len(user_input): reverse = user_input[letter_num]+reverse letter_num = letter_num+1 if reverse==word: return True else: return False while True : user_input = input("Enter a word") if user_input == "quit": break isPal = isPalindrome(user_input) if isPal == True: print (user_input,'is parindorm') else: print (user_input,'is not parindorm') break Enter a word113311 113311 is parindorm Enter a word123 123 is not parindorm Enter a wordquit
| Short word per line mystr = "Hello" letter_num = 0 while letter_num < len(mystr): print (mystr[letter_num]) letter_num = letter_num + 1 H e l l o
| Basic Function def myprint(text): print ("" + str(text) + "") return myprint("opal") hello it's bacon opal def myprintnew(text, decoration): print (decoration + str(text) + decoration) return myprintnew("opal", "m") hello it's bacon opal mopalm def doubleit(number): return number * 2 print (doubleit(3)) print (doubleit(doubleit(4))) hello it's bacon opal mopalm 6
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