PyCoders Week3 Homework

assignment_1.py

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+# I. Write a function called int_return that takes an integer as input and returns the same integer.
+
+def int_return(n):
+    return n
+print(int_return(5))
+
+
+# II. Write a function called add that takes any number as its input and returns that sum with 2 added.
+
+def add(n):
+    sum = n + 2
+    return sum
+print(add(5))
+
+
+# III. Write a function called greet that takes any name (string), and greets the person.
+#      E.g. “Hello Bob! Nice to meet you!” (Only returns the greeting string, printing is done in the main program.)
+name=input("Enter a name: ")
+def greet(name):
+    print("Hello", name,"! Nice to meet you!")
+greet(name)
+
+
+# IV. Write a function, accum, that takes a list of integers as input and returns the sum of those integers.
+
+def accum(list):
+    sum = 0
+    for i in list:
+        sum = sum + i
+    print("Sum is: ", sum)
+list_1=[1,2,3,4,5,6,7,8,9,10]
+accum(list_1)
+
+# V. Write a function, length, that takes in a list as the input.
+# If the length of the list is greater than or equal to 5, return “Longer than 5”. If the length is less than 5, return “Less than 5”.
+
+
+def length(list):
+    if len(list)>=5:
+        return "Longer than 5" 
+    else:
+        return  "Less than 5" 
+
+list_1=["Tugrul", "Emrah","Ali","Emre"]
+print(length(list_1))
+
+
+# VI. You will need to write two functions for this problem.
+# The first function, divide that takes in any number and returns that same number divided by 2.
+# The second function called sum should take any number, divide it by 2, and add 6.
+# It should return this new number. You should call the divide function within the sum function. Do not worry about decimals.
+
+def diveded_by_2(n):
+    return n/2
+
+def sum(n):
+    return n+6
+
+n=int(input("Enter a n: "))
+print(sum(diveded_by_2(n)))
+

assignment_2.py

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+# Write a program to prompt the user for hours and rate per hour using input to compute gross pay.
+# Pay should be the normal rate for hours up to 40 and time-and-a-half for the hourly rate for all hours worked above 40 hours.
+# Put the logic to do the computation of pay in a function called computepay() and use the function to do the computation.
+# The function should return a value. Use 45 hours and a rate of 10.50 per hour to test the program (the pay should be 498.75).
+# You should use input to read a string and float() to convert the string to a number.
+# Do not worry about error checking the user input unless you want to - you can assume the user types numbers properly.
+
+hour= float(input("Please enter total work hours: "))
+price_per_hour=float(input("Enter price for per hour: "))
+def computepay(hour, price_per_hour):
+    if hour<=40:
+        return hour*price_per_hour
+    return (40*price_per_hour)+((hour-40)*(1.5*price_per_hour))
+
+print(computepay(hour,price_per_hour))
+
+
+

assignment_3.py

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+# I. Write a function sphere_volume that calculates and returns the volume of a sphere when given radius r as a parameter.
+# II. Then write a main program that calls sphere_volume to print the volume of a sphere with a radius of 3.
+# III. Write a function sphere that calls two other functions that calculate the area of a circle sphere_area and
+# volume of a sphere sphere_volume for a given radius r as a parameter.
+# Functions sphere_area and sphere_volume are nested inside the function sphere.
+# Function sphere returns both the area and the volume of the sphere.
+# (Reproduce sphere_volume function inside function sphere.) Make sure to print the results.
+import math
+r=float(input("Please enter a radius: "))
+
+def sphere_area(r):
+
+    A=math.pi*(r**2)
+    return A
+print(sphere_area(r), "m2")
+
+
+def sphere_volume(r):
+    v=(4/3)*r*sphere_area(r)
+    return v
+print(sphere_volume(r), "cm3")
+
+
+def sphere(r):
+
+        def sphere_volume(r):
+            return
+        def sphere_area(r):
+            return
+
+sphere(r)
+
+
+
+
+
+
+
+
+
+
+

assignment_4.py

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+# I. Write a recursive function sum_of_numbers to calculate the sum of numbers within a given range that takes start and end as parameters.
+# The function should work whether start is less or greater than end.
+
+
+def sum_of_numbers(start,end):
+    if start == end:
+        return end
+    elif start<end:
+        return start+sum_of_numbers((start+1), end)
+
+    elif start>end:
+        return start + sum_of_numbers((start-1), end)
+
+
+
+# II. Write a function called input_function to ask the user to enter the starting and ending numbers 
+# and call sum_of_numbers with those arguments and prints the result.
+
+
+
+
+def input_function():
+    start = int(input("enter start: "))
+    end = int(input("enter end: "))
+
+    result= sum_of_numbers(start,end)
+    print(result)
+
+input_function()
+# III. Write the same function sum_of_numbers to calculate the sum of numbers
+# but this time it takes a list of integers as an argument and calculates the sum of the integers in the list.
+# Invoke the function in the main program.
+
+lst=[1,2,3,4,5,6,7,8,9]
+def sum_of_numbers(lst):
+    total = sum(lst)
+    return total
+print(sum_of_numbers(lst))
+
+
+