Write a shutting down program:
First, def a function, shut_down
, that takes one argument s
.
Then, if the shut_down
function receives an s
equal to "yes", it should return "Shutting down"
Alternatively, elif s
is equal to "no", then the function should return "Shutdown aborted".
Finally, if shut_dow
n gets anything other than those inputs, the function should return "Sorry".
Import the math
module in whatever way you prefer. Call its sqrt
function on the number 13689 and print that value to the console.
First, def a function called distance_from_zero
, with one argument (choose any argument name you like).
If the type of the argument is either int
or float
, the function should return the absolute value of the function input.
Otherwise, the function should return "Nope".
Check if it works calling the function with -5.6 and "what?".
Rewrite your pay computation program (previus chapter) with time-and-a-half for overtime and create a function called computepay
which takes two parameters (hours and
rate).
Enter Hours: 45
Enter Rate: 10
Pay: 475.0
Let's use functions to calculate your trip's costs:
hotel_cost
with one argument nights
as input.
The hotel costs $140 per night. So, the function hotel_cost
should return 140 * nights.plane_ride_cost
that takes a string, city
, as input.
The function should return a different price depending on the location, similar to the code example above. Below are the valid destinations and their corresponding round-trip prices."Charlotte": 183
"Tampa": 220
"Pittsburgh": 222
"Los Angeles": 475
-Below your existing code, define a function called rental_car_cost
with an argument called days.
Calculate the cost of renting the car:
Every day you rent the car costs $40.(cost=40*days)
if you rent the car for 7 or more days, you get $50 off your total(cost-=50).
Alternatively (elif), if you rent the car for 3 or more days, you get $20 off your total.
You cannot get both of the above discounts.
Return that cost.
-Then, define a function called trip_cost
that takes two arguments, city
and days
.
Like the example above, have your function return the sum of calling the rental_car_cost(days)
, hotel_cost(days)
, and plane_ride_cost(city)
functions.trip_cost
function definion. Add a third argument, spending_money
.
Modify what the trip_cost
function does. Add the variable `spending_money to the sum that it returns.Follow the stpes:
cube
that takes an argument called number
.by_three
that takes an argument called number.
if that number is divisible by 3,by_three
should call cube(number)
and return its result. Otherwise, by_three
should return False.
-Check if it works.>>> def shut_down(s):
... if s=="yes":
... return "Shutting down"
... elif s=="no":
... return "Shutdown aborted"
... else:
... return "Sorry"
...
>>> s="no"
>>> shut_down(s)
'Shutdown aborted'
>>>
>>> from math import sqrt
>>> print sqrt(13689)
117.0
>>> def distance_from_zero(num):
... if type(num)== int or type(num)== float:
... return abs(num)
... else:
... return "Nope"
...
>>> distance_from_zero(-5.6)
5.6
>>> distance_from_zero("what?")
'Nope'
>>> def computepay(hours,rate):
... if hours < 40:
... pay=hours*rate
... print "the pay is:", pay
... else:
... pay = 40 * rate + (hours-40)*1.5*rate
... print "the pay is:", pay
...
>>>
>>> hours=raw_input("Enter worked hours:")
Enter worked hours:45
>>> hours=float(hours)
>>> rate=10
>>> computepay(hours,rate)
the pay is: 475.0
>>>
Store this in a file. You can use vi text editor
and open a .py
file, save and execute it:
root@erlerobot:~# vi trpcal.txt
root@erlerobot:~# cp trpcal.txt trpcal.py
root@erlerobot:~# python trpcal.py
This is the code:
nights=raw_input("Enter nights:")
city=raw_input("Enter city:")
days=raw_input("Enter days of car rental:")
spending_money=raw_input("Enter money:")
def hotel_cost(nights):
return 140*nights
def plane_ride_cost(city):
if city=="Charlotte":
return 183
elif city=="Tampa":
return 220
elif city=="Pittsburgh":
return 222
elif city=="Los Angeles":
return 475
def rental_car_cost(days):
cost=days*40
if days >= 7:
cost -= 50
elif days>=3:
cost-=20
return cost
def trip_cost(city,days,spending_money):
print rental_car_cost(days)+hotel_cost(days)+plane_ride_cost(city)+spending_money
trip_cost(city,days,spending_money)
>>> def cube(number):
... return number*number*number
...
>>> def by_three(number):
... if number %3 ==0:
... return cube(number)
... else:
... return False
...
>>> by_three(9)
729
>>>