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Dynamically/Lazily import python module on run-time. Also enables easy to use import path name.

Project description

Lets you dynamically/lazily import python module on run-time, enables easy to use import path name, saves memory. Also makes managing projects easy by not having to worry about nested folder structure producing long import names.

Warning

`importer()` argument was changed in version “0.9.4”. No need to manually provide `__package__` name. Will raise DeprecationWarning in future releases.

Install, update & uninstall

Use pip to:

pip install dynamic-import

pip install --upgrade dynamic-import

pip uninstall dynamic-import

Example

./example/sample/__init__.py

from dynamic_import import importer

# Static/Normal Import
from .static import static

# Dynamic Importer
importer(
    {
        'one': ('a', 'b', 'c'),  # from .one import a, b, c
        'two': ('x', 'y', 'z'),  # from .two import x, y, z
        'local': 'internals',    # from .local import internals
        'sub': {
            'page': ('e', 'f', 'g'),  # from .sub.page import e, f, g
            'name': 'name',           # from .sub.name import name
        }
    }
)

./example/example.py

# Static Import #1
# ----------------
from sample import static
# Only "sample" & "sample.static" modules are loaded at this point.
print(static())
print()

# Dynamic Import #1
# -----------------
from sample import a, b, c
# Now "sample", "sample.static" & "sample.one" modules are loaded at this point.
print(a())
print(b())
print(c())
print()

# Dynamic Import #2
# -----------------
from sample import x, y, z
# All "sample", "sample.static", "sample.one" & "sample.two" modules are loaded.
print(x())
print(y())
print(z())
print()

# Dynamic Import #3
# -----------------
from sample import internals
# This is to demonstrate you can relatively import one module from another module.
print(internals())
print()

# Sub-page Import #1
# ------------------
from sample import e, f, g
# This demonstrates you can use nested sub-dir and use main module to import from.
print(e())
print(f())
print(g())
print()

# Sub-page Import #2
# ------------------
from sample import name
# Another sub-dir example
print(name())
print()

Note

  • you can still use static/normal import e.g. `from .module import example` before importer() is called.
  • You can also use . e.g. `'.one': ('a', 'b', 'c')`
  • for 1 word import name you can use `'module': 'myclass'` vs `'module': ('myclass',)`
  • All import names must be unique.

License

Free, No limit what so ever. Read more

Project details


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