PCAP Modules and Packages Practice Question
Exhibit
ERROR: Could not find a version that satisfies the requirement package==1.0 (from versions: 2.0, 2.1) ERROR: No matching distribution found for package==1.0
A developer runs pip install package==1.0 and gets the above error. What is the most likely solution?
⚠ Common exam trap
Python Institute often tests the distinction between a missing package name and a missing version number, tricking candidates into checking the name or repository when the error specifically says the version is unavailable.
Answer choices
Why each option matters
Answer the question above first, then reveal the full breakdown to understand why each option is right or wrong.
Correct answer & explanation
✓
Use pip install package==2.0 instead.
The error indicates that version 1.0 of the package does not exist in the repository. By specifying a higher version like 2.0 that does exist, pip can successfully download and install the package. This is a common scenario when a package has never released version 1.0 or has skipped it.
Answer analysis
Option-by-option breakdown
For each option: why learners choose it and why it is or isn't the right answer here.
- ✗
Run pip update to upgrade pip.
Why it's wrong here
The command 'pip update' is not a real pip subcommand, so running it would immediately fail; even the correct upgrade command (python -m pip install --upgrade pip) would not help. The error comes from the package index, which only offers version 2.0, not 1.0. pip's client version has no effect on which package versions are published, so upgrading pip cannot add a missing version.
- ✗
Install from a different repository.
Why it's wrong here
Switching to a different repository would alter the set of available distributions, but the current index already contains a valid package version (2.0), so the problem is not a missing repository or a broken mirror. Changing the index URL could introduce different metadata or even remove the package, and it would not make version 1.0 magically appear. The correct action is to use the version that the existing repository actually provides.
- ✓
Use pip install package==2.0 instead.
Why this is correct
Use pip install package==2.0 because the error message explicitly lists 2.0 as the only available version; requesting that exact version aligns the requirement with what the index can supply. '==' is an exact version pin, so pip will select that version without ambiguity. This resolves the immediate failure, and if an older pin is needed, the dependency requirement must be updated rather than the environment.
- ✗
Check if the package name is correct.
Why it's wrong here
Checking the package name is unnecessary because pip successfully queried the index and returned a list of available versions; a nonexistent package would yield an error like 'No matching distribution found' with no version listing. The package is present, just not at the requested version. Therefore the name is not the cause; the version constraint is.
Visual reference
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