This week there will be less talking and more programming.
Make a program to help you to decide what to do:
import random
possible = ["nothing"]
while True:
x = input("What would you like to do: ")
if x == "done":
break
else:
possible.append(x)
what = random.choice(possible)
print("possible choices: ")
print(possible)
print("the magic 8 ball decided: " + what)
Make a program to help you multiply two numbers:
while True:
a = int(input("first number: "))
b = int(input("second number: "))
print(a, "*", b, "=", a*b)
Here I do a little trick, and make print print numbers instead of making them into string by passing it as separate parameters to the print function. otherwise I have to do:
while True:
a = int(input("first number: "))
b = int(input("second number: "))
print(str(a) + " *" + str(b) + "=" + str(a*b))
What is your spy name?
name = input("what is your name: ")
print("Your spy name is: " + name[0] + name[1])
You can get individual characters from string by picking them up with [] so if name is 'jane' then name[0] is 'j'
Make a calculator
while True:
a = int(input("first number: "))
b = int(input("second number: "))
op = input("operation * / + :")
result = 0
if op == "*":
result = a * b
elif op == "/":
result = a/b
elif op == "+":
result = a+b
else:
print("I dont understand " + op)
continue
print(a,op,b,'=',result)
See how we use continue to not print a result if we don't understand the operation. continue jumps to the beginning of the loop.
Print the numbers from 0 to 9 FOREVER
while True:
for i in range(10):
print(i)
Print each character of a string:
name = input("what is your name: ")
for c in name:
print(c)
Sum the numbers from 0 to 99
sum = 0
for i in range(100):
sum = sum + i
print(sum)
Print all the prime numbers from 0 to 100:
def is_prime(n):
if n == 1 or n == 0:
return False
for i in range(2, n):
if n % i == 0:
return False
return True
for i in range(100):
print(i, is_prime(i))
multiply two numbers:
a = int(input("number 1: "))
b = int(input("number 2: "))
c = a * b
print(c)
Timer:
import time
s = int(input("how many seconds: "))
for i in range(s):
print(i)
time.sleep(1)
print(s, "SECONDS ARE OVER")
Clock
import datetime
import time
import os
while True:
os.system('clear')
now = datetime.datetime.now()
print(now)
time.sleep(1)
Calendar
def show(calendar):
for row in calendar:
for day in row:
print(day,end=' ')
print('')
june = [
['Su', 'Mo', 'Tu', 'We', 'Th', 'Fr', 'Sa'],
[' ', ' ', ' 1', ' 2', ' 3', ' 4', ' 5'],
[' 6', ' 7', ' 8', ' 9', '10', '11', '12'],
['13', '14', '15', '16', '17', '18', '19'],
['20', '21', '22', '23', '24', '25', '26'],
['27', '28', '29', '30', ' ', ' ', ' '],
]
show(june)
Growing list of food.
food = []
while True:
what = input("what is your favorite food: ")
food.append(what)
print(what)
Guessing game
colors = ["red","green","blue"]
score = 0
while True:
guess = input("guess a color: ")
if guess in colors:
print("good guess! I like " + guess)
else:
print("nop, I dont like " + guess)
Guess again
def is_in_list(list,what):
for element in list:
if element == what:
return True
return False
colors = ["red","green","blue"]
score = 0
while True:
guess = input("guess a color: ")
if is_in_list(colors, guess):
print("good guess! I like " + guess)
else:
print("nop, I dont like " + guess)
What was your name again?
for i in range(10):
name = input("what is your name: ")
print(i)
print(name)
First and last letter:
name = input("what is your name: ")
print("first letter: " + name[0])
print("last letter: " + name[len(name)-1])
to get the last letter we have to count however letters are in the whole name, so len(name) will return 4 for 'jane' and it counts from 1
len("jane"):
j a n e
1 2 3 4
len("ja")
j a
1 2
but when we are using [0] to get to specific character from a string or element from a list, it counts from 0, so
j a n e
0 1 2 3
name = "jane"
name[0] is j
name[1] is a
name[2] is n
name[3] is e
len(name) is 4 (because len counts from 1)
so name[len(name) - 1], is name[4 - 1] or name[3] which is the last letter
Make a Line
def line(width, symbol):
for x in range(width):
print(symbol,end='')
line(20, '#')
line(30, '*')
line(40, '_')
Make a triangle
def line(width, symbol):
for x in range(width):
print(symbol,end='')
for i in range(100):
line(i,'*')
print('')
Make a beam
def line(width, symbol):
for x in range(width):
print(symbol,end='')
for i in range(50):
line(i, ' ')
line(i, '*')
print('')
Make a box
def line(width, symbol):
for x in range(width):
print(symbol,end='')
def box(width,height,symbol):
for y in range(height):
line(width,symbol)
print('')
box(16,20)
box(10,20,'#')
box(15,13,'*')
Do some touch typing.
Make inverse beam
def line(width, symbol):
for x in range(width):
print(symbol,end='')
count = 50
for i in range(count):
line(count - i, ' ')
line(i, '*')
print('')
Make a tree
def line(width, symbol):
for x in range(width):
print(symbol,end='')
count = 50
for i in range(count):
half = int((count-i)/2)
line(half , ' ')
line(i, '*')
print('')
Inverse
def line(width, symbol):
for x in range(width):
print(symbol,end='')
count = 50
for i in range(count):
line(count-i, '*')
print('')
Inverse tree
def line(width, symbol):
for x in range(width):
print(symbol,end='')
count = 50
for i in range(count):
half = int(i/2)
line(half , ' ')
line(count-i, '*')
print('')
Art
def line(width, symbol):
for x in range(width):
print(symbol,end='')
while True:
count = 10
for i in range(count):
line(count-i, '*')
print('')
for i in range(count):
line(i, '#')
print('')
Looks so pretty!
#
##
###
####
#####
######
#######
########
#########
**********
*********
********
*******
******
*****
****
***
**
*
#
##
###
####
#####
######
#######
########
#########
**********
*********
********
*******
******
*****
****
***
**
*
More Art
import random
def line(width, symbol):
for x in range(width):
print(symbol,end='')
symbols = ['*','#','%','^','&']
while True:
count = random.randint(5,80)
symbol = random.choice(symbols)
for i in range(count):
line(count-i, symbol)
print('')
symbol = random.choice(symbols)
for i in range(count):
line(i, symbol)
print('')
Staircase
def line(width, symbol):
for x in range(width):
print(symbol,end='')
count = 100
for i in range(0, count, 5):
line(i, '*')
print('')
Range is so cool, and you didnt even notice!
Try this:
for i in range(0, 100, 10):
print(i)
it will print
0
10
20
30
40
50
60
70
80
90
so every 10th number, now try:
for i in range(0, 100, 5):
print(i)
and
for i in range(0, 100, 2):
print(i)
Of course you dont have to start counting from 0:
for i in range(50, 100, 2):
print(i)
Do some touch typing if there is time left.