Where <mode> can be:
"normal" (or unset): Only explicitly marked lazy imports are lazy
"all": All module-level imports (except in try blocks and import *) become potentially lazy
"none": No imports are lazy, even those explicitly marked with lazy keyword
When the global flag is set to "all", all imports at the global level of all modules are potentially lazy except for those inside a try block or any wild card (from ... import *) import.
No. From the PEP: