bpo-41887: omit leading spaces/tabs on ast.literal_eval (#22469)

Also document that eval() does this (the same way).

1 files changed, 1 insertions, 1 deletions

diff --git a/Lib/ast.py b/Lib/ast.py
index d860917..d8bd337 100644
--- a/Lib/ast.py
+++ b/Lib/ast.py
@@ -59,7 +59,7 @@ def literal_eval(node_or_string):
     sets, booleans, and None.
     """
     if isinstance(node_or_string, str):
-        node_or_string = parse(node_or_string, mode='eval')
+        node_or_string = parse(node_or_string.lstrip(" \t"), mode='eval')
     if isinstance(node_or_string, Expression):
         node_or_string = node_or_string.body
     def _raise_malformed_node(node):