How deeply does Python Workout, Second Edition cover open?

Explains modes, iteration, binary access, and chunked reads, but does not develop filesystem-specific behavior.

Open

As explained in Python Workout, Second Edition

open is Python's built-in function for opening a file and returning a file object for reading, writing, or appending.

Use open() to obtain a file-like object for reading, writing, or appending. Its optional mode combines r, w, or a with b for binary access; r is the default. section 6.3

Choose an access pattern:

Iterate directly over the returned object; each iteration provides the next line, including its newline character. section 6.3

Read a file line by line

with open(filename) as f: for one_line in f: print(len(one_line))

How Python Workout, Second Edition covers it

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Also explained in

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A Pythonic Adventure: From Python basics to a working web appThe Python open function opens a file and returns an object representing the resulting file connection.
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Python Workout: 50 ten-minute exercisesopen is a Python built-in function that creates and returns a file object for accessing a named file in a specified mode.
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The Quick Python Book, Fourth Editionopen() is Python's built-in function for opening a file and returning a file object.
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Python How-Toopen is a Python built-in function that opens a file and returns a file object for reading, writing, or other supported operations.
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Learn AI-Assisted Python Programming, Second EditionThe Python open function creates a file object for accessing a named file with a specified mode.
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Julia as a Second Languageopen is a Julia function that establishes access to a file or other stream and returns an associated IO object.
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Get Programming: Learn to code with Pythonopen is Python's built-in function for opening a file and returning a file object.

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Related concepts

file objectproduces · A file object is a program-accessible representation of an open file or stream, including its access state and input/output operations.
bufferingconfigured by · Buffering is the temporary storage of data or work between production and consumption to accommodate differences in processing rates, absorb interruptions, or improve transfer efficiency.
file-like objectproduces · A file-like object is an object that exposes operations resembling file operations, such as reading or writing, whether or not it is backed by a filesystem file.

This explainer was generated by Manning's knowledge graph from the text of Python Workout, Second Edition. The section links point to the parts of the book it draws on.