10 examples of 'list comprehension python if else' in Python

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231def is_comprehension(x):
232 """Returns true if this is a comprehension type."""
233 return isinstance(x, (ObjectComprehension, SetComprehension, ArrayComprehension))
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1042@utils.check_messages("using-constant-test", "missing-parentheses-for-call-in-test")
1043def visit_comprehension(self, node):
1044 if node.ifs:
1045 for if_test in node.ifs:
1046 self._check_using_constant_test(node, if_test)
45def create_comprehension(for_node: ast.For) -> ast.comprehension:
46 return ast.comprehension(target=for_node.target, iter=for_node.iter, ifs=[])
1276def visit_ComprehensionNode(self, node):
1277 if node.expr_scope:
1278 self.env_stack.append(self.env)
1279 self.env = node.expr_scope
1280 # Skip append node here
1281 self._visit(node.loop)
1282 if node.expr_scope:
1283 self.env = self.env_stack.pop()
1284 return node
929@backtrackable
930@memoize
931def parse_comprehension_iter(self):
932 """
933 rule =
934 | comprehension_for
935 | comprehension_where
936 """
937 result = self.parse_comprehension_for()
938 if result is None:
939 result = self.parse_comprehension_where()
940
941 return result
500def visit_list_comprehension(self, o: 'mypy.nodes.ListComprehension') -> str:
501 return self.dump([o.generator], o)
446def visit_comprehension(self, node, parent):
447 """visit a Comprehension node by returning a fresh instance of it"""
448 newnode = nodes.Comprehension(parent)
449 newnode.postinit(
450 self.visit(node.target, newnode),
451 self.visit(node.iter, newnode),
452 [self.visit(child, newnode) for child in node.ifs],
453 getattr(node, "is_async", None),
454 )
455 return newnode
466def p_if_stmt(p):
467 'if_stmt : IF test COLON suite'
468 p[0] = ast.If([(p[2], p[4])], None)
126@abstractmethod
127def visit_list_comprehension(self, o: 'mypy.nodes.ListComprehension') -> T:
128 pass
1216@specialize.arg(2)
1217def comprehension_helper(self, comp_node,
1218 handle_source_expr_meth="handle_expr",
1219 for_type=syms.comp_for, if_type=syms.comp_if,
1220 iter_type=syms.comp_iter,
1221 comp_fix_unamed_tuple_location=False):
1222 handle_source_expression = getattr(self, handle_source_expr_meth)
1223 fors_count = self.count_comp_fors(comp_node, for_type, if_type)
1224 comps = []
1225 for i in range(fors_count):
1226 for_node = comp_node.get_child(1)
1227 for_targets = self.handle_exprlist(for_node, ast.Store)
1228 expr = handle_source_expression(comp_node.get_child(3))
1229 assert isinstance(expr, ast.expr)
1230 if for_node.num_children() == 1:
1231 comp = ast.comprehension(for_targets[0], expr, None)
1232 else:
1233 col = comp_node.get_column()
1234 line = comp_node.get_lineno()
1235 # Modified in python2.7, see http://bugs.python.org/issue6704
1236 if comp_fix_unamed_tuple_location:
1237 expr_node = for_targets[0]
1238 assert isinstance(expr_node, ast.expr)
1239 col = expr_node.col_offset
1240 line = expr_node.lineno
1241 target = ast.Tuple(for_targets, ast.Store, line, col)
1242 comp = ast.comprehension(target, expr, None)
1243 if comp_node.num_children() == 5:
1244 comp_node = comp_iter = comp_node.get_child(4)
1245 assert comp_iter.type == iter_type
1246 ifs_count = self.count_comp_ifs(comp_iter, for_type)
1247 if ifs_count:
1248 ifs = []
1249 for j in range(ifs_count):
1250 comp_node = comp_if = comp_iter.get_child(0)
1251 ifs.append(self.handle_expr(comp_if.get_child(1)))
1252 if comp_if.num_children() == 3:
1253 comp_node = comp_iter = comp_if.get_child(2)
1254 comp.ifs = ifs
1255 if comp_node.type == iter_type:
1256 comp_node = comp_node.get_child(0)
1257 assert isinstance(comp, ast.comprehension)
1258 comps.append(comp)
1259 return comps

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