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22 lines
693 B
Python
22 lines
693 B
Python
import sys
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from django.db.models import Q
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def print_q_expr(expr, indent="", is_tail=True):
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'''
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Simple print method for debugging Q-expressions' trees.
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'''
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sys.stdout.write(indent)
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sa, sb = (' └── ', ' ') if is_tail else (' ├── ', ' │ ')
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if type(expr) == Q:
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sys.stdout.write('{}{}\n'.format(sa, expr.connector))
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for child in expr.children:
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print_q_expr(child, indent + sb, expr.children[-1] == child)
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else:
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try:
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queryset = ', '.join(repr(v) for v in expr[1])
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except TypeError:
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queryset = repr(expr[1])
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sys.stdout.write(' └── {} {}\n'.format(expr[0], queryset))
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