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compile_command() returned None. Nothing happens.
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The line should not have a trailing newline; it may have
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concatenated contents of the buffer as source. If this
indicates that the command was executed or invalid, the buffer
is reset; otherwise, the command is incomplete, and the buffer
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This is a backwards compatible interface to the InteractiveConsole
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Arguments (all optional, all default to None):
banner -- passed to InteractiveConsole.interact()
readfunc -- if not None, replaces InteractiveConsole.raw_input()
local -- passed to InteractiveInterpreter.__init__()
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