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Welcome to Lecture 72 of the course "Programming in Python" by Prof. Sudarshan Iyengar. Full Course: https://study.iitm.ac.in/ds/course_pages/BSCS1002.html Video Overview In this lecture we demonstrate how to search for a specific phone number within a large text file of size 230MB using Python. The program opens the file reads it line by line and iterates through its contents while converting strings to integers for comparison. We also highlight a common error related to null values and show how to resolve it using a conditional if loop. A flag variable is used to track whether the number is found and we discuss how to handle reaching the end of a file gracefully by checking for empty strings. This example combines file handling error management and practical coding strategies for big text files. About IIT Madras' online Bachelor of Science programme IIT Madras offers four year BS programmes that aim to provide quality education to all irrespective of age educational background or location. The BS programme has multiple levels which provide flexibility to students to exit at any of these levels. Depending on the courses completed and credits earned the learner can receive a Foundation Certificate from IITM CODE (Centre for Outreach and Digital Education), Diploma(s) from IIT Madras or BSc/BS Degrees from IIT Madras. For more details Visit: https://www.iitm.ac.in/academics/study-at-iitm/non-campus-bs-programmes #Python #FileHandling #LargeFile #TextFile #PhoneNumbers #SearchAlgorithm #StringManipulation #IntegerConversion #WhileLoop #IfStatement #ErrorHandling #CodeExample #Programming #DataProcessing #FileNotFound #FlagVariable #ReadLine #PythonTutorial #Scripting #Coding #BeginnerPython #LearnPython #CodeWithPython #PythonCourse
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