Answered: I have a separate code file for the…

Database System Concepts

7th Edition

ISBN:9780078022159

Author:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Publisher:Abraham Silberschatz Professor, Henry F. Korth, S. Sudarshan

Chapter1: Introduction

Section: Chapter Questions

Problem 1PE

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I have a separate code file for the mean, median, and mode; I just need a new python code which will open or print the mean, median, and mode on a single python code. The data or numbers to compute the mean, median, and mode is in txt file named "numbers.txt"

Just create a separate python file which will read the .txt file (numbers.txt) and will open my code in mean.py, median.py, and mode.py; then print them out.

See my code for mean, median, and mode below; as well as the .txt file for your reference.

***numbers.txt***

45
66
22
10
15
88
15
31
90

***mean.py***

"""

File: mean.py

Prints the mean of a set of numbers in a file.

"""

fileName = input("Enter the file name: ") # Input fileName

f = open(fileName, 'r') # Open the file in read mode

sum=0 # Initialize sum to 0

count=0 # Initialize count to 0

for line in f.readlines(): # For each line in file

sum+=float(line.strip()) # Add the number to sum

count+=1 # Increment count by 1

print ('The Mean is:', (sum/count)) # Outputs the Mean (Average)

***median.py***

"""

File: median.py

Prints the median of a set of numbers in a file.

"""

fileName = input("Enter the file name: ")

f = open(fileName, 'r')

# Input the text, convert it to numbers, and

# add the numbers to a list

numbers = []

for line in f:

words = line.split()

for word in words:

numbers.append(float(word))

# Sort the list and print the number at its midpoint

numbers.sort()

midpoint = len(numbers) // 2

print("The median is", end=" ")

if len(numbers) % 2 == 1:

print(numbers[midpoint])

else:

print((numbers[midpoint] + numbers[midpoint - 1]) / 2)

***mode.py***

"""

File: mode.py

Prints the mode of a set of numbers in a file.

"""

fileName = input("Enter the file name: ")

f = open(fileName, 'r')

# Input the text, convert its to words to uppercase, and

# add the words to a list

words = []

for line in f:

wordsInLine = line.split()

for word in wordsInLine:

words.append(word.upper())

# Obtain the set of unique words and their

# frequencies, saving these associations in

# a dictionary

theDictionary = {}

for word in words:

number = theDictionary.get(word, None)

if number == None:

# word entered for the first time

theDictionary[word] = 1

else:

# word already seen, increment its number

theDictionary[word] = number + 1

# Find the mode by obtaining the maximum value

# in the dictionary and determining its key

theMaximum = max(theDictionary.values())

for key in theDictionary:

if theDictionary[key] == theMaximum:

print("The mode is", key)

break

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