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Syntax of the seek function in python is myfile.seek(offset, reference_point) where myfile is the file object. What is the default value of reference_point?
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Correct answer is option 'A'. Can you explain this answer?
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Syntax of the seek function in python is myfile.seek(offset, reference...
Python file method seek() sets the file's current position at the offset. The whence argument is optional and defaults to 0, which means absolute file positioning; other values are 1, which means seek relative to the current position, and 2, which means seek relative to the file's end. There is no return value.
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Syntax of the seek function in python is myfile.seek(offset, reference...
The default value of the reference_point in the seek() function in Python is 0.
Explanation:
- The seek() function is used to change the current file position within a file.
- It takes two parameters: offset and reference_point.
- The offset parameter specifies the number of bytes to be moved.
- The reference_point parameter determines the reference point from where the offset is calculated.
- The default value of the reference_point is 0, which means the offset is calculated from the beginning of the file.
Let's understand this with an example:
Suppose we have a file called "example.txt" with the following content:
"Hello, World! This is an example file."
To demonstrate the seek() function, consider the following code:
```
file = open("example.txt", "r")
file.seek(7)
print(file.read())
```
Explanation of the code:
- The file is opened in read mode using the open() function.
- The seek() function is called with an offset of 7 and the default reference point of 0.
- This means that the file position is moved 7 bytes from the beginning of the file.
- The read() function is then called to read the contents from the new file position.
- The output of this code will be "World! This is an example file." because the file position was moved to the 7th byte, skipping "Hello, ".
In conclusion, the default value of the reference_point in the seek() function is 0, indicating that the offset is calculated from the beginning of the file.
Explanation:
- The seek() function is used to change the current file position within a file.
- It takes two parameters: offset and reference_point.
- The offset parameter specifies the number of bytes to be moved.
- The reference_point parameter determines the reference point from where the offset is calculated.
- The default value of the reference_point is 0, which means the offset is calculated from the beginning of the file.
Let's understand this with an example:
Suppose we have a file called "example.txt" with the following content:
"Hello, World! This is an example file."
To demonstrate the seek() function, consider the following code:
```
file = open("example.txt", "r")
file.seek(7)
print(file.read())
```
Explanation of the code:
- The file is opened in read mode using the open() function.
- The seek() function is called with an offset of 7 and the default reference point of 0.
- This means that the file position is moved 7 bytes from the beginning of the file.
- The read() function is then called to read the contents from the new file position.
- The output of this code will be "World! This is an example file." because the file position was moved to the 7th byte, skipping "Hello, ".
In conclusion, the default value of the reference_point in the seek() function is 0, indicating that the offset is calculated from the beginning of the file.
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Syntax of the seek function in python is myfile.seek(offset, reference_point) where myfile is the file object. What is the default value of reference_point?a)0b)1c)2d)3Correct answer is option 'A'. Can you explain this answer?
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