Python Answers

Modify your program from Learning Journal Unit 7 to read dictionary items from a file and write the inverted dictionary to a file. You will need to decide on the following:

• How to format each dictionary item as a text string in the input file.
• How to covert each input string into a dictionary item.
• How to format each item of your inverted dictionary as a text string in the output file.

Create an input file with your original three-or-more items and add at least three new items, for a total of at least six items.

Include the following in your Learning Journal submission: 

• The input file for your original dictionary (with at least six items).
• The Python program to read from a file, invert the dictionary, and write to a different file.
• The output file for your inverted dictionary.
• A description of how you chose to encode the original dictionary and the inverted dictionary in text files.

Describe how catching exceptions can help with file errors. Write three Python examples that actually generate file errors on your computer and catch the errors with try: except: blocks. Include the code and output for each example in your post. 

Describe how you might deal with each error if you were writing a large production program. These descriptions should be general ideas in English, not actual Python code. 

• Which of the following is the correct regular expression to extract all the phone numbers from the following chunk of text:
  
• 'Office of Research Administration: (734) 647-6333 | 4325 North Quad
• Office of Budget and Financial Administration: (734) 647-8044 | 309 Maynard, Suite 205
• Health Informatics Program: (734) 763-2285 | 333 Maynard, Suite 500
• Office of the Dean: (734) 647-3576 | 4322 North Quad
• UMSI Engagement Center: (734) 763-1251 | 777 North University
• Faculty Adminstrative Support Staff: (734) 764-9376 | 4322 North Quad'
• [(]\d{3}[)]\d{3}[-]\d{4}
• [(]\d{3}[)]\s\d{3}[-]\d{4}
• \d{3}\s\d{3}[-]\d{4}
• \d{3}[-]\d{3}[-]\d{4}
  

Max Contiguous Subarray
Given a list of integers, write a program to identify the contiguous sub-list that has the largest sum and print the sum. Any non-empty slice of the list with step size 1 can be considered as a contiguous sub-list.
Input

The input will contain space-separated integers, denoting the elements of the list.
Output

The output should be an integer.
Explanation

For example, if the given list is [2, -4, 5, -1, 2, -3], then all the possible contiguous sub-lists will be,

[2]
[2, -4]
[2, -4, 5]
[2, -4, 5, -1]
[2, -4, 5, -1, 2]
[-4]
[-4, 5]
[-4, 5, -1]
[-4, 5, -1, 2]
[5]
[5, -1]
[5, -1, 2]
[-1]
[-1, 2]
[2]
Among the above contiguous sub-lists, the contiguous sub-list [5, -1, 2] has the largest sum which is 6.
Sample Input 1
2 -4 5 -1 2 -3
Sample Output 1
6

Sample Input 2
-2 -3 4 -1 -2 1 5 -3
Sample Output 2
7

Numbers in String - 1

Given a string, write a program to return the sum and average of the digits of all numbers that appear in the string, ignoring all other characters.Input

The input will be a single line containing a string.Output

The output should contain the sum and average of the digits of all numbers that appear in the string.

Note: Round the average value to two decimal places.Explanation

For example, if the given string is "I am 25 years and 10 months old", the digits of all numbers that appear in the string are 2, 5, 1, 0. Your code should print the sum of all digits(8) and the average of all digits(2.0) in the new line.

Sample Input 1

I am 25 years and 10 months old

Sample Output 1

8

2.0

Sample Input 2

Tech Foundation 35567

Sample Output 2

26

5.2

First Perfect Square

Given two integers (M and N), write a program to print the first perfect square in a given range.Input

The first line of input will contain a positive integer (M).

The second line of input will contain a positive integer (N).Output

The output should be a single line containing the first perfect square in a given range.Explanation

For example, if the given numbers are M is 4 and N is 16, the perfect squares from 4 to 16 are 4(2 * 2), 9(3 * 3), and 16(4 * 4), as the first perfect square is 4. So the output should be 4.

Sample Input 1

4

16

Sample Output 1

4

Sample Input 2

5

8

Sample Output 2

No Perfect Square

Ordered Matrix

Given a M x N matrix, write a program to print the matrix after ordering all the elements of the matrix in increasing order.Input

The first line of input will contain two space-separated integers, denoting the M and N.

The next M following lines will contain N space-separated integers, denoting the elements of each list.Output

The output should be M lines containing the ordered matrix.

Note: There is a space at the end of each line.Explanation

For example, if the given M is 3 and N is 3, read the inputs in the next three lines if the numbers given in the next three lines are the following.

1 20 3
30 10 2
5 11 15

By ordering all the elements of the matrix in increasing order, the ordered matrix should be

1 2 3
5 10 11
15 20 30

Sample Input 1

3 3

1 20 3

30 10 2

5 11 15

Sample Output 1

1 2 3

5 10 11

15 20 30

Sample Input 2

2 5

-50 20 3 25 -20

88 17 38 72 -10

Sample Output 2

-50 -20 -10 3 17

20 25 38 72 88

String Rotation

Given two strings(S1 and S2), write a program to determine if a string S2 is a rotation of another string S1.

Input

The first line of the input will be a string S1.

The second line of the input will be a string S2.Output

If string S2 is a rotation of another string S1, print number of right rotations made by string S1 to match the string S2. Otherwise, print "No Match".

Where right rotation means all elements are moving towards the right side by one place where the last element will be placed in the first place example, one right rotation of "python" is "npytho"

For example, if the given strings S1 and S2 are "python" and "onpyth",

The first right rotation of s1 is "npytho" which is not equal to string S2"onpyth"

The second right rotation of s2 is "onpyth" which is equal to string S2 "onpyth".

So output 2

Sample Input 1

python

onpyth

Sample Output 1

2

Sample Input 2

Python

Python

Sample Output 2

IPL Match Details

Write a program that reads all the match outcomes and summarizes the information of all the matches.

Points are given to the teams based on the outcome of the match.

A win earns a team 3 points. A draw earns 1. A loss earns 0.

The following information is expected:

MP: Matches Played

W: Matches Won

D: Matches Drawn (Tied)

L: Matches Lost

P: Points

The team information should be displayed in descending order of points.Input

Names of teams may contain spaces but will be less than 24 characters

100 >= N >= 0

Sample Input

6

CSK;RR;loss

RR;DD;draw

MI;KKR;win

KKR;RR;loss

CSK;DD;draw

MI;DD;draw

Sample Output

Team: RR, Matches Played: 3, Won: 2, Lost: 0, Draw: 1, Points: 7

Team: MI, Matches Played: 2, Won: 1, Lost: 0, Draw: 1, Points: 4

Team: DD, Matches Played: 3, Won: 0, Lost: 0, Draw: 3, Points: 3

Team: CSK, Matches Played: 2, Won: 0, Lost: 1, Draw: 1, Points: 1

Team: KKR, Matches Played: 2, Won: 0, Lost: 2, Draw: 0, Points: 0

Smallest Missing Number

Given a list of numbers, write a program to print the smallest positive integer missing in the given numbers.Input

The input will be a single line containing numbers separated by space.Output

The output should be a single line containing the smallest missing number from given numbers.Explanation

For example, if the input numbers are 3, 1, 2, 5, 3, 7, 7.

The number 1, 2, 3 are present. But the number 4 is not. So 4 is the smallest positive integers that is missing from the given numbers.

Sample Input 1

3 1 2 5 3 7 7

Sample Output 1

4

Sample Input 2

5 5 2 3 1 8 8 4

Sample Output 2

6