Log out Go to App
Go to App

Learning Materials

Features

Discover

Chapter 9: Problem 34

When you open a file for the purpose of saving a pickled object to it, what file access mode do you use?

Short Answer

Expert verified
Answer: The most suitable file access mode for opening a file to save a pickled object to it is the 'write' (w) mode.

Step by step solution

01

Understanding File Access Modes

File access modes determine how a file is opened and used. Some common access modes are read (r), write (w), append (a) and read-write (r+). The suitable mode for this exercise is the one that allows writing to the file without reading or appending it.
02

Evaluating Access Modes

Let's analyze different file access modes: - Read (r): Allows only reading from the file. It's not suitable for this exercise as we need to write a pickled object to the file. - Write (w): Allows writing to the file. If the file already exists, its content will be overwritten. If the file doesn't exist, a new file will be created. This mode seems suitable for our task. - Append (a): Allows appending to the file. This mode maintains the existing content and allows adding new content. Not suitable for this exercise as we want to overwrite the existing content. - Read-Write (r+): Allows both reading and writing. Not suitable for this exercise as we don't need to read the file.
03

Choosing the Correct Access Mode

Based on our evaluation, we can conclude that the most suitable file access mode for opening a file to save a pickled object to it is 'write' (w) mode, as it allows writing to the file and overwrites the existing content if the file already exists or creates a new file if it doesn't exist.

Unlock Step-by-Step Solutions & Ace Your Exams!

  • Full Textbook Solutions

    Get detailed explanations and key concepts

  • Unlimited Al creation

    Al flashcards, explanations, exams and more...

  • Ads-free access

    To over 500 millions flashcards

  • Money-back guarantee

    We refund you if you fail your exam.

Start your free trial

Over 30 million students worldwide already upgrade their learning with Vaia!

One App. One Place for Learning.

All the tools & learning materials you need for study success - in one app.

Get started for free

Most popular questions from this chapter

What is the difference between the remove and discard methods?

What will the following code display? stuff \(=\\{1: \text { 'aaa' } 2:\) 'bbb', 3 : 'ccc't} print ( len (stuff))

After the following statement executes, what elements will be stored in the myset set? \\[\text { myset }=\operatorname{set}([1,2,2,3,4,4,4])\\]

After the following code executes, what elements will be members of set3? $$\begin{array}{l}\text { set1 }=\operatorname{set}\left(\left[' a^{\prime}, \quad^{\prime} b^{\prime},\quad^{\prime}c^{\prime}\right]\right) \\ \text { set } 2=\operatorname{set}\left(\left[' b^{\prime}, \quad^{\prime} c^{\prime}, \quad^{\prime} d^{\prime}\right]\right) \\\\\text { set } 3=\text { set1. symmetric }_{-} \text {difference (set2) }\end{array}$$

What function do you call to retrieve and unpickle an object?
See all solutions

Recommended explanations on Computer Science Textbooks

Databases

Read Explanation

Computer Systems

Read Explanation

Functional Programming

Read Explanation

Theory of Computation

Read Explanation

Computer Network

Read Explanation

Problem Solving Techniques

Read Explanation
View all explanations

What do you think about this solution?

We value your feedback to improve our textbook solutions.

Study anywhere. Anytime. Across all devices.

Sign-up for free