REPL with multiple function definitions

[Rob Cliffe via Python-list]

This 2-line program

def f(): pass
def g(): pass
runs silently (no Exception).  But:

23:07:02 c:\>python
Python 3.8.3 (tags/v3.8.3:6f8c832, May 13 2020, 22:20:19) [MSC v.1925 32 
bit (Intel)] on win32
Type "help", "copyright", "credits" or "license" for more information.
>>> def f(): pass
... def g(): pass
  File "<stdin>", line 2
    def g(): pass
    ^
SyntaxError: invalid syntax
>>>

Is there a good reason for this?
Thanks
Rob Cliffe
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