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-rw-r--r--tests/basics/string_fstring_invalid.py13
1 files changed, 13 insertions, 0 deletions
diff --git a/tests/basics/string_fstring_invalid.py b/tests/basics/string_fstring_invalid.py
new file mode 100644
index 0000000000..6fce323c5b
--- /dev/null
+++ b/tests/basics/string_fstring_invalid.py
@@ -0,0 +1,13 @@
+# PEP-0498 specifies that '\\' and '#' must be disallowed explicitly, whereas
+# MicroPython relies on the syntax error as a result of the substitution.
+
+print(f"\\")
+print(f"#")
+try:
+ eval("f'{\}'")
+except SyntaxError:
+ print("SyntaxError")
+try:
+ eval("f'{#}'")
+except SyntaxError:
+ print("SyntaxError")