10 examples of 'python for loop with multiple variables' in Python

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365def FOR(self, node):
366 """
367 Process bindings for loop variables.
368 """
369 vars = []
370 def collectLoopVars(n):
371 if hasattr(n, 'name'):
372 vars.append(n.name)
373 else:
374 for c in n.getChildNodes():
375 collectLoopVars(c)
376
377 collectLoopVars(node.assign)
378 for varn in vars:
379 if (isinstance(self.scope.get(varn), Importation)
380 # unused ones will get an unused import warning
381 and self.scope[varn].used):
382 self.report(messages.ImportShadowedByLoopVar,
383 node.lineno, varn, self.scope[varn].source.lineno)
384
385 self.handleChildren(node)
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994def setLoopVar(self, loop_var):
995 self.loop_var = loop_var
69def test_for():
70 src = dedent("""\
71 for a in [1,2]:
72 a
73
74 for a1 in 1,"":
75 a1
76 """)
77 check_p(src, 1)
66def _while_loop(cond, body, loop_vars, # pylint: disable=redefined-outer-name
67 shape_invariants=None, parallel_iterations=10, # pylint: disable=unused-argument
68 back_prop=True, swap_memory=False, # pylint: disable=unused-argument
69 maximum_iterations=None, name=None): # pylint: disable=unused-argument
70 i = 0
71 while (cond(*loop_vars) and
72 (maximum_iterations is None or i < maximum_iterations)):
73 loop_vars = body(*loop_vars)
74 i += 1
75 return loop_vars
258def emit_sequential_loop(self, codegen_state, iname, iname_dtype,
259 lbound, ubound, inner):
260 ecm = codegen_state.expression_to_code_mapper
261
262 from pymbolic.mapper.stringifier import PREC_NONE, PREC_SUM
263 from genpy import For
264
265 return For(
266 (iname,),
267 "range(%s, %s + 1)"
268 % (
269 ecm(lbound, PREC_NONE, "i"),
270 ecm(ubound, PREC_SUM, "i"),
271 ),
272 inner)
453def visitFor(self, node, scope):
454 self.visit(node.target, scope, 1)
455 self.visit(node.iter, scope)
456 self.visit(node.body, scope)
457 if node.orelse:
458 self.visit(node.orelse, scope)
88def visit_For(self, node):
89 self.make_tab()
90 self.write('for ')
91 self.visit(node.target)
92 self.write(' in ')
93 self._in_args = True
94 self.visit(node.iter)
95 self._in_args = False
96 self.write(':\n')
97 self._indent += 1
98 for n in node.body:
99 self.visit(n)
100 self._indent -= 1
152def visit_For(self, node):
153 self._assign([node.target])
677def visitGenExprFor(self, node):
678 start = self.newBlock()
679 anchor = self.newBlock()
680 end = self.newBlock()
681 self.setups.push((LOOP, start))
682 self.emit('SETUP_LOOP', end)
683 if node.is_outmost:
684 self.loadName('.0')
685 else:
686 self.visit(node.iter)
687 self.emit('GET_ITER')
688 self.nextBlock(start)
689 self.set_lineno(node, force=True)
690 self.emit('FOR_ITER', anchor)
691 self.nextBlock()
692 self.visit(node.assign)
693 return (start, anchor, end)
45def create_comprehension(for_node: ast.For) -> ast.comprehension:
46 return ast.comprehension(target=for_node.target, iter=for_node.iter, ifs=[])

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