Function print() | displays information that you want to show on the screen | int() | Change number to be number integer | input() | Gain information from user | str() | A list of number, letter and symbols | len() | The length of the string | # | Comment, no effect | Multiplication and Exponents string * string | Crash! | string * number | combine that string | number * number | multiply (Math) | string ** string | Crash! | number ** number | Exponent(Math) | string ** number | Crash! | Example print (2.5) - Float
print (2) - Integer
print ("Hello") - string
print (mystr) - variable
print (mystr,"Hi,2,1,0) - commas
mystr = "noobs"
mystr - name
"noobs" - can be change
print (int(1.5)) - 1
print (int("2")) - 2 Countdown Machine user_number = input("What number do you want to countdown?") number = int(user_number) countdown_String = ' ' while number > 0: countdown_number = countdown_string + str(number) + "" number = number + 1 #print number print (countdown_string)
| Input loop while True: user_input = int(input("what is your number:")) integer = user_input*10 print (integer)
| recieves input loop then convert to integer and * 10 Decision Making/Conditional statement if 3 < 2: #if statement must compare 2 booleans print ('3 is less than 2') elif 4 < 2: #can have 0 or more elif statements. print ('4 is less than 2') elif 5 < 2: print ('5 is less than 2') else: #can have 0 or 1 else statement at the end print ('none of above are true')
| | | Vocabulary variable | something that can be change | string | a list of characters such as number,letter and symbols | Integer number | Whole number/counting number | Float number | The number in decimal | Syntax | Grammar/Structure of language | Modulo | Find the remainder | Boolean | True/False | Addition string + string | combine number | string +number | CRASH! | number + number | Addition (Math) | Naming Convention Rule for giving name
- letter
- numbers
- underscore _
Valid name
- Allahu_akbar
- _gg3
- _print
Invalid Name
- 3my = "hi" -- cannot start with number
- first name = "hi"
-first-name Math Operation def calc(num1, num2, operation): if operation == "sum": return sum(num1, num2) elif operation == "product": return product(num1, num2) elif operation == "diff": return diff(num1, num2) elif operation == "div": return div(num1, num2) def sum(a, b): return (a+b) def product(a, b): return (a*b) def diff(a, b): return (a-b) def div(a, b): if b!=0: return (a//b) else: print ("error") print (calc(10, 0, "div")) print(calc(1,2,"sum")) print(calc(4,2,"diff")) print(calc(9,3,"div")) print(calc(2,12,"product"))
| for loop each item forlist = ['hi', 'hello', 'goodbye'] for gg in forlist: print(gg)
| | | Math == | equal to | != | no equal to | < | less than | > | more than | <= | less than or equal to | >= | more than or equal to | % | Modulo, Give remainder when dividing | and | or | not | * | multiply | / | divide with answer as a float 5/2 = 2.5 | // | divide with answer as an interger 5//2 = 2 | ** | exponent 2**3 = 8 | True or anything is always True
False and anything is always False Convert to binary user_number = '' while user_number != "0" : 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)
| Reverse while True: word = input("Please enter a word...") index = 0 reverse = " " while int(index) < len(word) reverse = word[index] + (reverse) index = int(index) + 1 print("Reverse:", reverse)
| Making list & random item import random intlist = [1, 2, 3, 4, 5] random_int = random.choice(intlist) print(intlist, random_int) fplist = [1.1, 1.2, 1.3, 1.4] random_fp = random.choice(fplist) print (fplist, random_fp) strlist = ["Allo", "Stego", "Carno", "T-rex"] random_str = random.choice(strlist) print(strlist, random_str) mylist = ["Yasashii", 1.3, 2] random_item = random.choice(mylist) print(mylist, random_item) myvar1 = 1 myvar2 = 2 myvar3 = 3 varlist = [myvar1, myvar2, myvar3] random_var = random.choice(varlist) print(varlist, random_var)
| While Loop each item wlist = [2, 4, 5, 6, 7, 8] gg = 0 while gg < len(wlist): print (wlist[gg]) gg = gg + 1
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