I'm trying to make a program to calculate the surface area of a shack with a pitched roof. I've only been in this class for 2 weeks and I'm a bit overwhelmed. The program should ask the user via console for the values and then calculate the values using the definition.
I'm not asking for the entire code at all. But I don't understand how I can calculate inputs using a definition and then print them. this is my code so far:
import math
def floorspace(a,b):
G = 0
G = a*b
return (G)
#main program
a = int(input("enter the length of the floor!"))
b = int(input("Enter the width of the floor!"))
print(floorspace, G)
You don't need to import math as basic multiplication is already included. You also don't need to initialize a variable before you assign it so I removed the
G = 0
G = a*b
lines and replaced it with a simple
return a*b
You don't need brackets around a return statement, just a print statement.
The final two issues are that you're printing incorrectly and you used the wrong function parameters. You would need to pass in the same number of parameters that are in the function declaration (so in this case, 2). Pass in a and b from the user inputs into your floorspace() function and then call print(). The code should work now!
def floorspace(a,b):
return a*b
#main program
a = int(input("enter the length of the floor!"))
b = int(input("Enter the width of the floor!"))
print(floorspace(a,b))
in your code print(floorspace,G) G is not defined you must write your it like this print(floorspace(a,b))
Related
I am a fresh beginner in learning Python, and need some hints to understand the following exercise :
the goal is to write a script that uses the cube function in the calculus of the volume of a sphere.
Also please don't mind my grammar errors as English is not my first language. Thank you !
r = float(input("choose a number :"))
def volume_sphere(cube(r)):
pi = 3.14
cube = int(r**3)
return(cube)
volume_sphere = float(4/3*pi*cube(r))
return(volume_sphere)
volume_sphere(r)
#volume_sphere = volume_sphere(cube(r))
Is this possible to do ? This is how I understand the relationship between both functions
print("the volume of the sphere is : , volume_sphere(r)")
You would define two separate functions, and then one function can call the other. In this case volume_sphere can call cube.
import math
def cube(x):
return x**3
def volume_sphere(r):
return math.pi * cube(r)
Then you would just call this like
radius = float(input("choose a number :"))
volume = volume_sphere(radius)
print("the volume of the sphere is : {}".format(volume))
Note that you are free to define a function within another function.
def volume_sphere(r):
def cube(x):
return x**3
return math.pi * cube(r)
In this particular case I don't see a strong reason to do so. These are typically used for closures or wrappers.
I want to make a function that will create a Hilbert Curve in python using numbers. The parameters for the function would be a number and that will tell the function how many times it should repeat. To make a Hilbert Curve you start with 'L', then that turns into '+RF-LFL-FR+', and then 'R' turns into '-LF+RFR+FL-' How should I do this?
#Here is what I've made so far
def hilbert(num):
s = 'L'
for i in range(num-1):
s = s.replace('L','+RF-LFL-FR+')
b = 'R'
for i in range(num-1):
b = b.replace('R','-LR+RFR+FL-')
end = s + b
return end
It crashes completely when you enter 1, I tried to use to code I made for the Koch snowflake but I wasn't sure how to use the two variables.
#Here is the results for when I use the function
hilbert(1)
#It returns
a crash bruh
hilbert()
#It returns
'+RF-+RF-LFL-FR+F+RF-LFL-FR+-FR+-L-LR+RFR+FL-+-LR+RFR+FL-F-LR+RFR+FL-+FL-'
#Here is what I want it to return
hilbert(1)
'L'
hilbert(3)
'+-LF+RFR+FL-F-+RF-LFL-FR+F+RF-LFL-FR+-F-LF+RFR+FL-+'
I'm attempting to create a game similar to battleship, and I'm having trouble figuring out how I would initialize the board by having each cell begin with an 'O' and displaying it to the user. A requirement for the function player_board() is that it's supposed to take in a grid representing the player's game board as an argument and output it to the user's screen. This is a portion of my code that I'm struggling with. I'm also not sure why it keeps printing out an extra 'O' at the end. Any help or feedback would be appreciated!
import random
sizeof_grid = 9
chance = 10
def mines():
grid = [{("M" if random.randint(0, chance) == 0 else " ") for i in
range(sizeof_grid)} for i in range(sizeof_grid)]
return grid
def initialize_board():
start_board=[["O" for i in range(sizeof_grid)] for i in range(sizeof_grid)]
return start_board
def players_board():
for r in initialize_board():
for c in r:
print (c, end="")
print()
return c
print(players_board())
You get the extra "O: because of the last line of code. You call the function with print(players_board) and in the function itself you return c (which has the value of one "O"). This means you print out the return value of the function which is "O".
You can execute the function with players_board() and remove the print().
Also you can remove the return c at the bottom of the function.
new to Python - struggling with functions. - Image of code attached.
It inputs the name & scores just fine with the validation checks.
I need to use the scores input by the user and total them.
However, when I've tried to sum(score) it doesn't like it.
I can't work out how to sum the 4 total scores.
Please help :) Also would love any feedback on the style of coding etc.
Thanks in advance x
Image: Code in Python
I would rewrite the main function to be something like:
def GetStudentInput():
score = 0
for i in range (4):
print("Mrs Pearson's Class Test Score Data")
name = CheckStringInput("What's Your Name: ")
score += CheckNumericInput("What's Your Score: ")
print(score)
This eliminates the need for an extra function and avoids using a list since you don't appear to need the individual values elsewhere -- only the sum total.
In the absense of code for people to see, we have something like
def get_stuff():
for i in rnage(4):
name = input("Name?")
score = int(input("Score?"))
and another function
def TotalScore():
pass
How do we call total score?
Answer: Make sure we don't forget the user inputs and return them:
def get_stuff():
names = []
scores = []
for i in range(4):
names.append(input("Name?"))
scores.append(int(input("Score?")))
return names, scores
and take the scores in the summing function:
def TotalScore(scores):
return sum(scores)
This, of course, changes the calling code.
For example, you need to capture the returns when you call get_stuff:
names, scores = get_stuff()
total = TotalScores(scores)
I'm new to programming, so this question might be dumb.
I need to introduce the value of Tr1 into the Bzero1 function. When I run the module I get the result below:
.
The program is not running the Bzero1 function and I'm not sure why. Is it because I am not introducing the Tr1 value correctly or something else? I want Bzero1 to perform the operation 0.083-(0.422/Tr1**1.6), with Tr1 obtained from the result of T/Tc1.
I would appreciate your help a lot.
T = float(input("Introduce system temperature in Kelvin: "))
print("System temperature is: ", T)
Tc1 = float(input("Introduce critical temperature of component 1: "))
print("Critical temperature of component 1 is: ", Tc1)
def Tr1(T, Tc1):
print("Relative temperature 1: ", T/Tc1)
Tr1 = Tr1(T, Tc1)
def Bzero1(Tr1):
print("Bzero 1: ", 0.083-(0.422/Tr1**1.6))
Do not replace Tr1 function value, to avoid such replacement change:
Tr1_value = Tr1(T, Tc1)
Call Bzero1 function with code:
Bzero1(Tr1_value)
Modify Tr1 to return value:
def Tr1(T, Tc1):
result = T/Tc1
print("Relative temperature 1: ", result)
return result
Also, let me suggest you to take a look on python official tutorial - there you can learn a lot about python ...
Good Luck !
def is only defining a function, not calling it. E.g.
def foo(a):
print a * 2
means there is now a function foo that takes argument a. The a in foo(a) is the name of the variable inside the function.
So in your case
def Bzero1(Tr1):
print("Bzero 1: ", 0.083-(0.422/Tr1**1.6))
defines the function Bzero1 as taking argument Tr1, but doesn't call it. You need to call the function, just like you called Tr1:
Bzero1(Tr1)
You can see that this way it becomes confusing quite quickly on which is a variable outside of your function, and which are variables inside functions. Therefore it is better to use different names for variables in your outer program v.s. those inside functions.
Here are a few more best practices that you might find useful:
It is generally better to first define all functions and then execute the program's main code, as opposed to intermixing function definitions and the main program.
Another best practice is to make functions only calculate output from inputs, and handle output somewhere else. This way you get to reuse your functions in other parts of your program while always keeping control of when and what to output to the user.
Finally, you shouldn't generally reassign names, e.g. Tr1 = Tr1(...) means that Tr1 is now no longer the name of the function but the name of the result returned by Tr1. In short, use different names for different things.
Applying these tips, your code might look as follows:
# function definitions first
def Tr1(vt, vtc1):
return vt/vtc1
def Bzero1(vtr1):
return 0.083-(0.422 / vtr1 ** 1.6)
# get user input
T = float(input("Introduce system temperature in Kelvin: "))
print("System temperature is: ", T)
vTc1 = float(input("Introduce critical temperature of component 1: "))
print("Critical temperature of component 1 is: ", vTc1)
# run calculations
vTr1 = Tr1(T, vTc1)
vBz1 = Bzero1(vTr1)
# print output
print("Relative temperature 1: ", vTr1)
print("Bzero 1: ", vBz1)
Note
Since I don't know the semantic meaning of your variables I have just used small letter v as a prefix - in general it is better to use meaningful names like temperature or temp1 and temp2 etc. Programs are not math papers.