Python Answers

Write a function in this file called nine_lines that uses the function three_lines (provided below) to print a total of nine lines.

Now add a function named clear_screen that uses a combination of the functions nine_lines, three_lines, and new_line (provided below) to print a total of twenty-five lines. The last line of your program should call first nine_lines and then the clear_screen function.

The function three_lines and new_line are defined below so that you can see nested function calls. Also, to make counting “blank” lines visually easier, the print command inside new_line will print a dot at the

Example 1: Define a function that takes an argument. Call the function. Identify what code is the argument and what code is the parameter.

Example 2: Call your function from Example 1 three times with different kinds of arguments: a value, a variable, and an expression. Identify which kind of argument is which. 

Example 3: Create a function with a local variable. Show what happens when you try to use that variable outside the function. Explain the results.

Example 4: Create a function that takes an argument. Give the function parameter a unique name. Show what happens when you try to use that parameter name outside the function. Explain the results.

Example 5: Show what happens when a variable defined outside a function has the same name as a local variable inside a function. Explain what happens to the value of each variable as the program runs.

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Write your own function that illustrates a feature that you learned in this unit. The function must take at least one argument. The function should be your own creation

Write a program that will perform the following:

A. Display Employee List

(Retrieve records from empList.txt, store it in a dictionary, display the employee list arranged by keys)

Note: Refer to example code in dictionary module (bbl) for sorting

B. Add Employee

(

Ask user to input the following data:

- unique employee number

- lastname

- firstname

- department

- rate per day

Write the employee record to the empList.txt

)

C. Add Payroll Record

(Ask user to input the following data:

-employee number

-month

-no of days worked

write the payroll record into the empMR.txt

)

D. Generate pay slip

Ask for employee number and month of the payslip to be generated

Create a payslip like statement written in a text file.

=============================================================

Payslip for the Month of _________________

Employee No.: ______________       Employee Name: _____________

Department: ________________

Rate per Day:_______________       No. of Days Worked: ________

Gross Pay: _________________

The volume of a sphere is 4/3πr³, where π has the value of "pi" given in Section 2.1 of your textbook. Write a function called print_volume (r) that takes an argument for the radius of the sphere, and prints the volume of the sphere.

Call your print_volume function three times with different values for radius.

Include all of the following in your Learning Journal:

• The code for your print_volume function.

The inputs and outputs to three calls of your print_volume.

matrix rotation

You are given two strings of same length and comprosied of + and - , print a new string that shows the result of the interaction of the two strings assume the following rules.

Interaction between two positive characters results in a positive character.

( "+" Against a "+" returns another "+")

Interaction between two negative characters results in a negative character.

("-" Against a "-" returns another "-")

Interaction between a positive and a negative character results in a " 0" (Neutral)

("+" against a "-" returns a "0")

Input: ++++++ ------

Output: 000000

Input: +-----+++- --+-+-++--

Output: 0-0-0-++0-

Assignment

Using the IDLE development environment, create a Python script named tryme4.py. (Note: an alternative to IDLE is to use a free account on the pythonanywhere website: https://www.pythonanywhere.com/)

Write a function in this file called nine_lines that uses the function three_lines (provided below) to print a total of nine lines.

Now add a function named clear_screen that uses a combination of the functions nine_lines, three_lines, and new_line (provided below) to print a total of twenty-five lines. The last line of your program should call first nine_lines and then the clear_screen function.

The function three_lines and new_line are defined below so that you can see nested function calls. Also, to make counting “blank” lines visually easier, the print command inside new_line will print a dot at the beginning of the line:

def new_line():

print('.')

def three_lines():

new_line()

new_line()

new_line()

Given two strings N and K. Your goal is to determine the smallest substring of N that contains all the characters in K. If no substring is present in N print no matches found.

Note: If character is repeated multiple times in K, your substring should also contain that character repeated same number of times.

Input: first line contains two strings N and K

Output: string representing the smallest substring as mentioned above

Input1: stealen lent

Output 1: tealen

Input 2: tomato tomatho

Output 2: No matches found

Write a program to find the sum of odd numbers in first N natural numbers.