Bigos lecture from 2024-1119

bigos/lecture20241119/Links.txt

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+
+W3Schools Python Read Files
+============================
+https://www.w3schools.com/python/python_file_open.asp
+
+Reading and Writing Files in Python (Guide)
+===========================================
+https://realpython.com/read-write-files-python/
+
+Reading CSV files in Python
+===========================
+https://www.programiz.com/python-programming/reading-csv-files
+
+Reading and Writing CSV Files in Python
+========================================
+https://realpython.com/python-csv/
+
+CSV docs at Python.org
+=======================
+https://docs.python.org/3/library/csv.html
+

bigos/lecture20241119/OReilly csv file overview.txt

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+Doc from O'Reilly AI Assist
+=============================
+
+Python 3 Reads CSV File
+There are two primary ways to read a CSV file in Python 3: using the built-in csv module and using the popular pandas library.
+
+Method 1: Using the csv Module
+Import the csv module: import csv
+Open the CSV file in read mode: with open('example.csv', 'r') as csvfile:
+Create a csv.reader object: readCSV = csv.reader(csvfile, delimiter=',')
+Iterate over the rows: for row in readCSV:
+Access individual columns using indexing (e.g., row[0] for the first column)
+Example code:
+
+import csv
+
+with open('example.csv', 'r') as csvfile:
+    readCSV = csv.reader(csvfile, delimiter=',')
+    for row in readCSV:
+        print(row)  # prints each row as a list
+        print(row[0])  # prints the first column
+        print(row[0], row[1], row[2])  # prints specific columns
+
+Method 2: Using pandas
+Import the pandas library: import pandas as pd
+Read the CSV file into a DataFrame object: df = pd.read_csv('example.csv')
+Access individual columns using the column name (e.g., df['column_name']) or indexing (e.g., df.iloc[:, 0] for the first column)
+Example code:
+
+import pandas as pd
+
+df = pd.read_csv('example.csv')
+print(df)  # prints the entire DataFrame
+print(df['column_name'])  # prints a specific column
+print(df.iloc[:, 0])  # prints the first column
+
+Key differences
+The csv module is more lightweight and flexible, but requires more manual effort to parse the CSV file.
+pandas provides a more convenient and powerful way to work with structured data, but has a larger overhead and requires more memory.
+Choose the method that best fits your specific use case and requirements.

bigos/lecture20241119/OReilly file read overview.txt

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+Python File Read Tutorial
+In this tutorial, we will cover the basics of reading files in Python. We will explore the open() function, file modes, and how to read file contents.
+
+1. Opening a File
+To read a file in Python, you need to use the open() function, which takes two arguments: a filename and a file mode. The file mode determines how you intend to interact with the file.
+
+Example:
+
+myfile = open("example.txt", "r")
+
+In this example, we open a file named “example.txt” in read mode ("r").
+
+2. File Modes
+Python provides several file modes:
+
+"r": Read mode (default). Opens the file for reading only.
+"w": Write mode. Opens the file for writing only, overwriting any existing content.
+"r+": Read/Write mode. Opens the file for both reading and writing.
+"a": Append mode. Opens the file for appending only, without overwriting existing content.
+"a+": Append and Read mode. Opens the file for both appending and reading.
+3. Reading File Contents
+Once you have opened a file, you can read its contents using a loop or by reading a specific number of characters.
+
+Example (reading each line):
+
+myfile = open("example.txt", "r")
+for line in myfile:
+    print(line.strip())
+myfile.close()
+
+In this example, we read each line of the file and print it to the console using a for loop. The strip() method removes any trailing newlines or whitespace.
+
+Example (reading a specific number of characters):
+
+myfile = open("example.txt", "r")
+content = myfile.read(10)  # read 10 characters
+print(content)
+myfile.close()
+
+In this example, we read the first 10 characters of the file using the read() method.
+
+4. Closing a File
+It’s essential to close the file after you’re done reading its contents to free up system resources.
+
+Example:
+
+myfile.close()
+
+Alternatively, you can use a with statement to ensure the file is closed automatically:
+
+with open("example.txt", "r") as myfile:
+    for line in myfile:
+        print(line.strip())
+
+In this example, the with statement ensures the file is closed when the block of code is exited.
+
+Additional Tips
+Make sure the file exists and is in the correct location.
+Be mindful of file encoding and formatting when reading text files.
+Use the os module to work with file paths and directories.
+Consider using libraries like csv or json for more advanced file parsing and manipulation.
+By following this tutorial, you should have a solid understanding of how to read files in Python. Happy coding!

bigos/lecture20241119/csvfiles/csvline1.py

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+
+line = "7/5/2016,123,638.5"
+
+# split line on commas
+lineFields = line.split(',')
+
+print(lineFields)
+
+# Individual columns from the spreadsheet
+print(lineFields[0], type(lineFields[0]) )
+print(lineFields[1], type(lineFields[1]) )
+print(lineFields[2], type(lineFields[2]) )
+
+# Convert ISO date --> 20161115 or 2016-1115 or 2016-11-15
+
+dateFields = lineFields[0].split('/')
+print(dateFields)
+
+#print(len(dateFields[0]))
+#print(len(dateFields[1]))
+
+if(len(dateFields[0]) == 1):
+    dateFields[0] = "0"+ dateFields[0]
+
+if(len(dateFields[1]) == 1):
+    dateFields[1] = "0"+ dateFields[1]
+
+print(dateFields)
+
+isoDate = dateFields[2] + dateFields[0] + dateFields[1]
+
+print("ISO Date = ", isoDate)

bigos/lecture20241119/csvfiles/csvline2.py

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+# Read a csv file from the current directory
+# import the csv function library
+import csv
+
+filename = "dogs.csv"
+
+with open(filename,'r') as csvfile:
+    csvData = csv.reader(csvfile,delimiter = ',',quotechar = '"')
+    for row in csvData:
+        print(row)
+

bigos/lecture20241119/csvfiles/dogs-with-hidden-char.csv

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+DogName,BirthYear,Breed,Color
+Harry,2007,Chinook,Buff
+Shenanigans,2008,Chinook,Tawney
+Mandy,2016,Chinook,Tawney
+Tanner,2002,Golden Retriever,Tan
+Rusty,2004,Golden Retriever,Tan
+Gimli,2022,Chinook,Tawney
+Yukon Jack,2020,Chinook,Tawney

bigos/lecture20241119/csvfiles/dogs.csv

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+DogName,BirthYear,Breed,Color
+Harry,2007,Chinook,Buff
+Shenanigans,2008,Chinook,Tawney
+Mandy,2016,Chinook,Tawney
+Tanner,2002,Golden Retriever,Tan
+Rusty,2004,Golden Retriever,Tan
+Gimli,2022,Chinook,Tawney
+Yukon Jack,2020,Chinook,Tawney

bigos/lecture20241119/csvfiles/hidden-character-dump.txt

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+
+This is from file dogs-with-hidden-char.csv
+
+Sometimes hidden characters are exported from the spreadsheet program. Run csvline2.py
+with the filename set to dogs-with-hidden-char.csv
+
+(base) edbigos@Edwards-MacBook-Pro-4 csvlines % od -bc dogs-with-hidden-char.csv
+0000000   357 273 277 104 157 147 116 141 155 145 054 102 151 162 164 150
+         357 273 277   D   o   g   N   a   m   e   ,   B   i   r   t   h
+0000020   131 145 141 162 054 102 162 145 145 144 054 103 157 154 157 162
+           Y   e   a   r   ,   B   r   e   e   d   ,   C   o   l   o   r
+0000040   015 012 110 141 162 162 171 054 062 060 060 067 054 103 150 151
+          \r  \n   H   a   r   r   y   ,   2   0   0   7   ,   C   h   i
+0000060   156 157 157 153 054 102 165 146 146 015 012 123 150 145 156 141
+           n   o   o   k   ,   B   u   f   f  \r  \n   S   h   e   n   a
+0000100   156 151 147 141 156 163 054 062 060 060 070 054 103 150 151 156
+           n   i   g   a   n   s   ,   2   0   0   8   ,   C   h   i   n
+0000120   157 157 153 054 124 141 167 156 145 171 015 012 115 141 156 144
+           o   o   k   ,   T   a   w   n   e   y  \r  \n   M   a   n   d
+0000140   171 054 062 060 061 066 054 103 150 151 156 157 157 153 054 124
+           y   ,   2   0   1   6   ,   C   h   i   n   o   o   k   ,   T
+0000160   141 167 156 145 171 015 012 124 141 156 156 145 162 054 062 060
+           a   w   n   e   y  \r  \n   T   a   n   n   e   r   ,   2   0
+0000200   060 062 054 107 157 154 144 145 156 040 122 145 164 162 151 145
+           0   2   ,   G   o   l   d   e   n       R   e   t   r   i   e
+0000220   166 145 162 054 124 141 156 015 012 122 165 163 164 171 054 062
+           v   e   r   ,   T   a   n  \r  \n   R   u   s   t   y   ,   2
+0000240   060 060 064 054 107 157 154 144 145 156 040 122 145 164 162 151
+           0   0   4   ,   G   o   l   d   e   n       R   e   t   r   i
+0000260   145 166 145 162 054 124 141 156 015 012 107 151 155 154 151 054
+           e   v   e   r   ,   T   a   n  \r  \n   G   i   m   l   i   ,
+0000300   062 060 062 062 054 103 150 151 156 157 157 153 054 124 141 167
+           2   0   2   2   ,   C   h   i   n   o   o   k   ,   T   a   w
+0000320   156 145 171 015 012 131 165 153 157 156 040 112 141 143 153 054
+           n   e   y  \r  \n   Y   u   k   o   n       J   a   c   k   ,
+0000340   062 060 062 060 054 103 150 151 156 157 157 153 054 124 141 167
+           2   0   2   0   ,   C   h   i   n   o   o   k   ,   T   a   w
+0000360   156 145 171
+           n   e   y

bigos/lecture20241119/datetime/calendar02.py

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+
+import calendar
+
+hc = calendar.HTMLCalendar(calendar.MONDAY)
+str = hc.formatmonth(2024,11)
+
+
+print(str)

bigos/lecture20241119/datetime/calendar03.py

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+
+import calendar
+
+daysOfWeek = ["Monday","Tuesday", "Wednesday","Thursday","Friday", "Saturday", "Sunday"]
+c = calendar.TextCalendar(calendar.MONDAY)
+
+counter = 0
+for i in c.itermonthdays(2024,11):
+    if(i > 0):
+        print(i, daysOfWeek[counter % 7])
+    counter += 1
+
+# counter = 0
+# while(counter < 22):
+#     print(counter % 7, daysOfWeek[counter % 7] )
+#     counter += 1

bigos/lecture20241119/datetime/calendar1.py

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+
+import calendar
+
+c = calendar.TextCalendar(calendar.MONDAY)
+str = c.formatmonth(2024,11)
+print(str)
+
+dayList = list(str)
+print(dayList)
+
+calList = str.split("\n")
+print(calList)
+
+for line in calList:
+    print(line,len(line))
+
+for line in calList:
+    print("{:25s}\t{:25s}".format(line,line))
+

bigos/lecture20241119/datetime/hack.py

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+
+import calendar
+
+months = []
+
+startMonth = 9
+monthCounter = startMonth
+while(monthCounter < startMonth + 3):
+    c = calendar.TextCalendar(calendar.MONDAY)
+    str = c.formatmonth(2024,monthCounter)
+    print(str)
+    calList = str.split("\n")
+    months.append(calList)
+    monthCounter += 1
+
+print(months)
+
+print("\n\n")
+for month in months:
+    print(month,len(month))
+
+print("\n\n")
+
+counter = 0
+while(counter < 8):
+    print("{:25s} {:25s} {:25s}".format(months[0][counter],months[1][counter],months[2][counter]))
+    counter += 1

bigos/lecture20241119/datetime/time01.py

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+import time
+
+myTime = time.localtime()
+
+print (time.localtime())
+
+print(myTime[0], type(myTime[0]))
+
+print("length = ",len(myTime))
+
+for myItem in myTime:
+    print(myItem)
+
+print("The date is {}/{}/{}".format(myTime[1],myTime[2],myTime[0]) )

bigos/lecture20241119/datetime/timeelapsed.py

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+import time
+
+# https://stackoverflow.com/questions/7370801/how-do-i-measure-elapsed-time-in-python
+
+start = time.time()
+print("hello")
+time.sleep(4)
+end = time.time()
+print(end - start)

bigos/lecture20241119/fileio_census/census-data-info.txt

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+The columns in the census data correspond to:
+
+Column  Data
+1       A "Name"
+2       Frequency in percent
+3       Cumulative Frequency in percent
+4       Rank

bigos/lecture20241119/fileio_census/file-read01.py

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+#!/usr/bin/python3
+
+## ============================ One time initializations ========================
+fileName = "testdata.txt"
+
+
+## ============================ Open and process file(s) ========================
+
+try:
+    inFile = open(fileName,'r')
+
+    count = 1
+    runFlag = True
+    while(runFlag):            # Process while true
+#        print(count,line.rstrip("\n"))
+        line = inFile.readline()
+        if line == "":
+            runFlag == False
+        else:
+            line = line.rstrip("\n")
+            print(count,line)
+            count = count + 1
+
+except:
+    print("Some error occurred. Ending here")
+    exit(-1)
+
+inFile.close()

bigos/lecture20241119/fileio_census/file-read02.py

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+#!/usr/bin/python3
+
+## ============================ One time initializations ========================
+fileName = "testdata.txt"
+
+
+## ============================ Open and process file(s) ========================
+
+try:
+    inFile = open(fileName,'r')
+
+    count = 1
+    runFlag = True
+    while(runFlag):            # Process while true
+#        print(count,line.rstrip("\n"))
+        line = inFile.readline()
+        if not (line == ""):
+            line = line.rstrip("\n")
+            print(count,line)
+            count = count + 1
+        else:
+           runFlag == False
+
+except:
+    print("Some error occurred. Ending here")
+    exit(-1)
+
+inFile.close()

bigos/lecture20241119/fileio_census/file-read03.py

@@ -0,0 +1,28 @@
+#!/usr/bin/python3
+
+## ============================ One time initializations ========================
+fileName = "testdata.txt"
+
+
+## ============================ Open and process file(s) ========================
+
+try:
+    inFile = open(fileName,'r')
+
+    count = 1
+    runFlag = True
+    while(1):            # Process while true
+
+        line = inFile.readline()
+        if line == "":              # Exit on empty line == end of file
+            break
+
+        line = line.rstrip("\n")
+        print(count,line)
+        count = count + 1
+
+except:
+    print("Some error occurred. Ending here")
+    exit(-1)
+
+inFile.close()

bigos/lecture20241119/fileio_census/file-read04.py

@@ -0,0 +1,35 @@
+#!/usr/bin/python3
+import re
+
+## ============================ One time initializations ========================
+fileName = "female-first.txt"
+outFileName = "female-first.csv"
+
+
+## ============================ Open and process file(s) ========================
+
+try:
+    inFile = open(fileName,'r')
+    outFile = open(outFileName,'w')
+
+    count = 1
+    runFlag = True
+    while(1):            # Process while true
+
+        line = inFile.readline()
+        if line == "":              # Exit on empty line == end of file
+            break
+
+        line = line.rstrip("\n")
+        line = line.lstrip().rstrip()
+        print(count,line)
+        csvLine = re.sub(' +',',',line)
+        print("\t",csvLine)
+        outFile.write(csvLine + "\n")
+        count = count + 1
+
+except:
+    print("Some error occurred. Ending here")
+    exit(-1)
+
+inFile.close()

bigos/lecture20241119/fileio_census/fileread01.py

@@ -0,0 +1,25 @@
+#!/usr/bin/python3
+
+# See https://stackabuse.com/read-a-file-line-by-line-in-python/
+# for more information
+# Just try reading it line by line on the first attempt.
+
+fileName = "testdata.txt"
+try:
+    inFile = open(fileName,'r')
+
+    count = 1
+    line = inFile.readline()
+    line = line.rstrip("\n")
+    while(line):  # Read line and place in variable named line
+#        print(count,line.rstrip("\n"))
+        print(count,line)
+        line = inFile.readline()
+        line = line.rstrip("\n")
+        count = count + 1
+
+except:
+    print("Some error occurred. Ending here")
+    exit(-1)
+
+inFile.close()

bigos/lecture20241119/fileio_census/get-firstname.py

@@ -0,0 +1,38 @@
+#!/usr/bin/python3
+
+## ============================ One time initializations ========================
+fileName = "male-first.txt"
+
+nameToSearch = input("Enter a first name: ")
+nameToSearch = nameToSearch.upper()
+
+## ============================ Open and process file(s) ========================
+
+try:
+    inFile = open(fileName,'r')
+
+    count = 1
+    runFlag = True
+    while(1):            # Process while true
+
+        line = inFile.readline()
+        if line == "":              # Exit on empty line == end of file
+            break
+
+        line = line.rstrip("\n")
+#        print(count,line)
+        fieldList = line.split(" ")
+#        print(fieldList)
+        print(fieldList[0],len(fieldList[0]))
+
+        if nameToSearch == fieldList[0] :
+            print("Matched {} = {} at position {}".format(nameToSearch,fieldList[0],count))
+            break
+
+        count = count + 1
+
+except:
+    print("Some error occurred. Ending here")
+    exit(-1)
+
+inFile.close()

bigos/lecture20241119/fileio_census/get-name-with-spaces.py

@@ -0,0 +1,34 @@
+#!/usr/bin/python3
+
+## ============================ One time initializations ========================
+fileName = "female-first.txt"
+
+
+## ============================ Open and process file(s) ========================
+
+try:
+    inFile = open(fileName,'r')
+
+    count = 1
+    runFlag = True
+    while(1):            # Process while true
+
+        line = inFile.readline()
+        if line == "":              # Exit on empty line == end of file
+            break
+
+        line = line.rstrip("\n")
+        print(count,line)
+        line = line.replace("  "," ")
+        print("\t",count,line)
+        fieldList = line.split(" ")
+        print(fieldList)
+        for field in fieldList:
+            print(field)
+        count = count + 1
+
+except:
+    print("Some error occurred. Ending here")
+    exit(-1)
+
+inFile.close()

bigos/lecture20241119/fileio_dogs/dogs.csv

@@ -0,0 +1,8 @@
+DogName,BirthYear,Breed,Color
+Harry,2007,Chinook,Buff
+Shenanigans,2008,Chinook,Tawney
+Mandy,2016,Chinook,Tawney
+Tanner,2002,Golden Retriever,Tan
+Rusty,2004,Golden Retriever,Tan
+Gimli,2022,Chinook,Tawney
+Yukon Jack,2020,Chinook,Tawney

bigos/lecture20241119/fileio_dogs/fileread01.py

@@ -0,0 +1,23 @@
+#!/usr/bin/python3
+import sys
+
+# See https://stackabuse.com/read-a-file-line-by-line-in-python/
+# for more information
+# Just try reading it line by line on the first attempt.
+filename = "testxdata.txt"
+try:
+    inFile = open(filename,'r')
+
+    count = 1
+    line = inFile.readline()
+    line = line.rstrip("\n")
+    while(line):  # Read line and place in variable named line
+#        print(count,line.rstrip("\n"))
+        print(count,line)
+        line = inFile.readline()
+        line = line.rstrip("\n")
+        count = count + 1
+except:
+    print(f"The file {filename} cannot be accessed.")
+    sys.exit(-1)
+

bigos/lecture20241119/fileio_dogs/fileread022.py

@@ -0,0 +1,29 @@
+#!/usr/bin/python3
+
+# See https://stackabuse.com/read-a-file-line-by-line-in-python/
+# for more information
+# Just try reading it line by line on the first attempt.
+try:
+    inFile = open("dogs.csv",'r')
+
+    count = 1
+    line = inFile.readline()
+    line = line.rstrip("\n")
+# process header
+    columnNames = line.split(",")
+    print(columnNames)
+    while(line):  # Read line and place in variable named line
+#        print(count,line.rstrip("\n"))
+        print(count,line)
+        columns = line.split(",")
+#        print(columns)
+        counter = 0
+        while(counter < 4):
+            print("\t{:12s} {:>20s}".format(columnNames[counter],columns[counter]) )
+            counter = counter + 1
+        line = inFile.readline()
+        line = line.rstrip("\n")
+        count = count + 1
+
+finally:
+    inFile.close()

bigos/lecture20241119/fileio_dogs/filewrite01.py

@@ -0,0 +1,22 @@
+#!/usr/bin/python3
+
+# See https://stackabuse.com/read-a-file-line-by-line-in-python/
+# for more information
+# Just try reading it line by line on the first attempt.
+
+sampleData = ["Harry", "Colorado", "Shenanigans", "Mandy", "Rusty"]
+
+try:
+    outFile = open("testdatawrite.txt",'w')
+
+    for dog in sampleData:
+        print(dog)
+        outFile.writelines(dog+"\n")
+
+except:
+    print("File write error!")
+    exit(-1)
+
+# When I get to the end of the file.
+#finally:
+outFile.close()

bigos/lecture20241119/fileio_dogs/testdata.txt

@@ -0,0 +1,4 @@
+Harry,2007
+Shenanigans,2010
+Katrina,2005
+Mandy,2016

bigos/lecture20241119/fileio_dogs/testdatawrite.txt

@@ -0,0 +1,5 @@
+Harry
+Colorado
+Shenanigans
+Mandy
+Rusty

bigos/lecture20241119/files_directory/directory1.py

@@ -0,0 +1,11 @@
+import os
+
+myPath = "./"
+
+files = os.listdir(myPath)
+
+files.sort()
+
+print(files)
+
+

bigos/lecture20241119/files_directory/directory2.py

@@ -0,0 +1,25 @@
+import os
+
+myPath = "./"
+
+files = os.listdir(myPath)
+
+files.sort()
+
+print(files)
+
+textFiles = []
+
+for myFile in files:
+    print(myFile)
+    fileParts = myFile.split(".")
+    print(fileParts)
+    if(len(fileParts) > 2):
+        print(len(fileParts))
+    filePartsLength = len(fileParts)
+    if fileParts[filePartsLength-1] == "txt":
+        print("Text file!")
+        textFiles.append(myFile)
+
+
+print("The text files are: ",textFiles)

bigos/lecture20241119/files_directory/dirwalk4.py

@@ -0,0 +1,16 @@
+import glob
+import os
+
+x = glob.glob("*.txt")
+
+print(x)
+
+x = glob.glob("*.py")
+
+print(x)
+
+for f in x:
+  print(f)
+  print(os.path.isfile("./"+f))
+
+

bigos/lecture20241119/files_directory/glob.py

@@ -0,0 +1,5 @@
+import glob
+
+files = glob.glob("./")
+
+print(files)

bigos/lecture20241119/files_pc_inventory/README.txt

@@ -0,0 +1,3 @@
+These are the outputs of an (old) PC inventory program.
+They create a csv file of the PC's configuration which saved under the filename derived from the
+network address.

bigos/lecture20241119/files_pc_inventory/csvInventoryList.py

@@ -0,0 +1,13 @@
+# Read a csv file from the current directory
+# import the csv function library
+import csv
+
+lineCounter = 0
+filename = "00-16-76-b2-b2-71.csv"
+
+with open(filename,'r') as csvfile:
+    csvData = csv.reader(csvfile,delimiter = ',',quotechar = '"')
+    for row in csvData:
+        lineCounter += 1 # Sharthand for LineCounter = LineCounter + 1
+        print(f"{lineCounter:5d} {row}")
+

bigos/lecture2024112/try01.py

@@ -0,0 +1,8 @@
+
+data1 = float(input("Enter the dividend "))
+
+data2 = float(input("Enter the divisor "))
+
+quotient = data1/data2
+
+print(f"{data1}/{data2} = {quotient}")

bigos/lecture2024112/try02.py

@@ -0,0 +1,13 @@
+import sys
+
+data1 = float(input("Enter the dividend "))
+
+data2 = float(input("Enter the divisor "))
+
+try:
+	quotient = data1/data2
+	print(f"{data1}/{data2} = {quotient}")
+except:
+	print(f"Invalid value. Division by zero is not allowed.")
+	sys.exit(-1)
+

bigos/lecture2024112/try03.py

@@ -0,0 +1,20 @@
+import sys
+
+try:
+	data1 = float(input("Enter the dividend "))
+except:
+	print(f"Invalid value for the dividend ")
+	sys.exit(-2)
+try:
+	data2 = float(input("Enter the divisor "))
+except:
+	print(f"Invalid value for the divisor ")
+	sys.exit(-3)
+
+try:
+	quotient = data1/data2
+	print(f"{data1}/{data2} = {quotient}")
+except:
+	print(f"Invalid value. Division by zero is not allowed.")
+	sys.exit(-1)
+

bigos/lecture2024112/try04.py

@@ -0,0 +1,19 @@
+import sys
+
+def getFloatValue(message):
+	try:
+		data1 = float(input(message))
+	except:
+		print(f"Invalid value for a floating point number. ")
+		sys.exit(-2)
+	return data1
+
+data1 = getFloatValue("Enter value for the dividend ")
+data2 = getFloatValue("Enter value for the divisor ")
+
+try:
+	quotient = data1/data2
+	print(f"{data1}/{data2} = {quotient}")
+except:
+	print(f"Invalid value. Division by zero is not allowed.")
+	sys.exit(-1)