U4L3 File Opening Modes in Python AKTU in Hindi | r w a r+ w+ a+ | Unit-4 | BCC302 BCC402 | Eduglue

U4L3 File Opening Modes in Python AKTU in Hindi | r w a r+ w+ a+ | B.Tech 2nd Year | Unit-4 | BCC302 | BCC402 | Eduglue

AKTU B.Tech 2nd Year Students! Is video mein hum seekhenge File Opening Modes in Python. open() function ke through hum file ko different modes mein open kar sakte hain.

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This lecture is part of Python Programming AKTU Unit 4 (File Handling) and is strictly based on AKTU syllabus for BCC302, BCC402, BCC302H, BCC402H.

Topics covered in this video:
- open() function syntax: open(filename, mode)
- File object returned by open()
- Read Modes: r (read only), rb (read binary), r+ (read and write)
- Write Modes: w (write only), wb (write binary), w+ (read and write)
- Append Modes: a (append only), ab (append binary), a+ (append and read)
- Cursor/File Pointer positions for each mode
- Default mode is read mode (r)
- File creation behavior in different modes

0:00 - Introduction to File Opening
0:17 - open() function in Python
0:53 - File name parameter
1:31 - Access Mode parameter
2:06 - Default access mode
2:36 - List of File Opening Modes
2:53 - Read Mode (r)
4:24 - Read Binary Mode (rb)
4:50 - Read and Write Mode (r+ or +r)
5:21 - Write Modes
5:50 - Write Binary Mode (wb)
8:27 - Append Modes
8:34 - Append Mode (a)
9:20 - Summary Table of All Modes
11:23 - Example: Opening a File
12:33 - Next Lecture: Writing to Files

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