4 examples of 'python lambda for loop' in Python

258
def emit_sequential_loop(self, codegen_state, iname, iname_dtype,
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        lbound, ubound, inner):
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    ecm = codegen_state.expression_to_code_mapper
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    from pymbolic.mapper.stringifier import PREC_NONE, PREC_SUM
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    from genpy import For
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    return For(
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            (iname,),
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            "range(%s, %s + 1)"
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            % (
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                ecm(lbound, PREC_NONE, "i"),
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                ecm(ubound, PREC_SUM, "i"),
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                ),
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            inner)

365
def FOR(self, node):
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    """
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    Process bindings for loop variables.
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    """
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    vars = []
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    def collectLoopVars(n):
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        if hasattr(n, 'name'):
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            vars.append(n.name)
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        else:
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            for c in n.getChildNodes():
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                collectLoopVars(c)
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    collectLoopVars(node.assign)
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    for varn in vars:
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        if (isinstance(self.scope.get(varn), Importation)
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                # unused ones will get an unused import warning
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                and self.scope[varn].used):
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            self.report(messages.ImportShadowedByLoopVar,
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                        node.lineno, varn, self.scope[varn].source.lineno)
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    self.handleChildren(node)

66
def _while_loop(cond, body, loop_vars,  # pylint: disable=redefined-outer-name
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                shape_invariants=None, parallel_iterations=10,  # pylint: disable=unused-argument
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                back_prop=True, swap_memory=False,  # pylint: disable=unused-argument
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                maximum_iterations=None, name=None):  # pylint: disable=unused-argument
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  i = 0
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  while (cond(*loop_vars) and
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         (maximum_iterations is None or i < maximum_iterations)):
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    loop_vars = body(*loop_vars)
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    i += 1
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  return loop_vars

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def visit_For(self, node):
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    self.make_tab()
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    self.write('for ')
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    self.visit(node.target)
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    self.write(' in ')
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    self._in_args = True
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    self.visit(node.iter)
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    self._in_args = False
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    self.write(':\n')
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    self._indent += 1
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    for n in node.body:
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        self.visit(n)
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    self._indent -= 1