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primepy

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library1.3pypypi✓ verified 26d ago

PrimePy is a Python library designed to simplify operations related to prime numbers, offering functions for checking primality, generating primes within a range, and finding prime factors. The library's last update was in May 2018, and it is currently unmaintained, making it potentially unsuitable for new projects or critical applications.

pip install primePy
INSTALL
IMPORT
SIG · PRIMEPY
P
primepy
pythonv1.3
Install
1.6s avg
Import
Disk
16MB
Pass rate
10/ 10
Env Coverage10 / 10
glibc
3.93.13
musl
3.93.13
Install & Compatibility
Where this runs
tested against v1.3 · pip install
no network on importno background threads
Install × environment matrix
Each cell = how many times install + import succeeded across repeated harness runs. Partial = flaky.
glibc = Debian/Ubuntu slim · musl = Alpine Linux
musl
py 3.103.95 runs
installs and imports cleanly · install 0.0s · import 0.000s · 17.8MB
glibc
py 3.103.95 runs
installs and imports cleanly · install 1.6s · import 0.000s · 18MB
16MB installed
● package 16MB
Code
Verified usage

Verified import paths — ran on the pinned version, not inferred.

primes
from primePy import primes

Demonstrates basic usage of `primePy` to check if a number is prime, find its prime factors, and get a list of the first 'n' prime numbers.

from primePy import primes # Check if a number is prime print(f"Is 17 prime? {primes.check(17)}") print(f"Is 10 prime? {primes.check(10)}") # Get prime factors of a number print(f"Prime factors of 252: {primes.factors(252)}") # Get the first 'n' prime numbers print(f"First 5 primes: {primes.first(5)}")
Debug
Known issues
breakingThe library is unmaintained since its last release in May 2018. This means there are no ongoing bug fixes, security updates, or compatibility assurances with newer Python versions or dependencies.
fix
Consider using actively maintained alternatives like `sympy`, `primefac`, or implementing prime number logic manually for critical applications. Evaluate thoroughly before using in production environments.
affects: 1.3 and earlier
gotchaThe `primes.check(1)` function incorrectly returns `True`, despite 1 not being considered a prime number by mathematical definition.
fix
Always add an explicit check for `n > 1` when using `primes.check(n)` if adherence to the strict definition of prime numbers (greater than 1) is required.
affects: 1.3 and earlier
Errors
Common errors & fixes
ModuleNotFoundError: No module named 'primePy'
The 'primePy' library has not been installed in the current Python environment or the import statement is incorrect.
fix
Ensure the library is installed using pip and the import statement is `from primePy import primes`. Example:
```python
pip install primePy
from primePy import primes
print(primes.check(7))
```
primes.check(1) returns True
The `primes.check()` function in `primePy` incorrectly identifies the number 1 as a prime number, which is a known logical bug in the unmaintained library.
fix
Implement a manual check for 1 before using `primes.check()`, or consider using a different, maintained prime number library. Example:
```python
from primePy import primes
number = 1
if number <= 1:
    print(f'{number} is not a prime number')
elif primes.check(number):
    print(f'{number} is a prime number')
else:
    print(f'{number} is not a prime number')
```
AttributeError: module 'primePy.primes' has no attribute 'facors'
This error occurs due to a typo in the method name. The `primePy` documentation for version 1.3 incorrectly lists `primes.facors(n)` instead of `primes.factors(n)`.
fix
Correct the method call to use `factors` instead of `facors`. Example:
```python
from primePy import primes
prime_factors = primes.factors(100)
print(prime_factors)
```
primepy functions are very slow / performance issues
The `primePy` library, being unmaintained since 2018, uses naive and inefficient algorithms for prime number operations, leading to slow performance, especially for larger numbers.
fix
For better performance and reliability, consider using a more modern and maintained library like `primefac` or `sympy.ntheory` which employ optimized algorithms. Alternatively, implement more efficient algorithms (e.g., Sieve of Eratosthenes for generating primes) manually if performance is critical.
Upgrade
Version history
1.3latest on PyPI · released May 29, 2018
Audit
Dependencies

No dependency data recorded yet.

Agent activity
7 hits · last 30 days
node
6
Resources
primepy — pip install primepy · libregistry