Why Should I Avoid Wildcard Imports in PyQt?

Avoidance of Wildcard Imports

When using PyQt, programmers may encounter lint warnings when importing all submodules using wildcard imports:

from PyQt4.QtCore import *
from PyQt4.QtGui import *

This can lead to unnecessary warnings for unused imports. Several alternatives exist to address this issue.

Options

• Enum

from PyQt4.QtCore import Qt, QPointF, QRectF
from PyQt4.QtGui import QGraphicsItem, QGraphicsScene, ...

This approach imports only specified classes, which can lead to a long list of imports.

• Prefixing

from PyQt4 import QtCore, QtGui

This requires prefixing all classes with their module name, which can be cumbersome.

• Avoidance

# Avoid wildcard imports

Recommendation

The recommended practice is to avoid wildcard imports and use qualified names or abbreviations instead. Qualified names provide better clarity and avoid the risk of rebinding or accidental errors. Abbreviated imports can balance conciseness with clarity. Avoid using multiple as clauses or long import lists in a single statement for enhanced readability and debuggability.

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