When we are coding python code, we typically use packages and modules that we import. For example, when we are coding we may write:
import numpy
import requests
from bs4 import BeautifulSoup
When we are trying to integrate python with html with Pyscript (https://pyscript.net/), it just says that it doesn’t have the package installed. However, when this happens in normal python we use PiP and import it from there. However, what should we do when we need a package in Pyscript?
Thank you!
At this time, bs4 is not supported. You will receive an error
ValueError: Couldn't find a pure Python 3 wheel for 'bs4'
You will also have problems using the requests package in pyscript. Usepyfetch instead of requests.get.
To import numpy and requests, use <py-env> before <py-script>. Example:
<body>
<py-env>
- numpy
</py-env>
<py-script>
import numpy as np
print(np.random.randn(10, 4))
</py-script>
</body>
Pyscript also supports package versions:
<py-env>
- numpy==1.22.3
</py-env>
It looks like py-env has been deprecated (I couldn't get it to work at all). Fortunately, py-config did the trick:
<py-config type="toml">
packages = ["numpy", "beautifulsoup4", "requests"]
</py-config>
<py-script>
import numpy as np
import requests
import bs4
from bs4 import BeautifulSoup
print(bs4.__version__)
print(requests.__version__)
a = np.array([1, 2, 3])
print("Array:", a)
print("Hello from Python in the browser!")
</py-script>
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<py-env>which defines what modules can be used. If I tried to use non-existing module then I saw it error that it can't find it onhttps://pypi.org(and probably it loads modules directly from this server). And as I expected some modules may not work because they may use C/C++ libraries. – Billat