| 1 | # SPDX-License-Identifier: Apache-2.0 |
| 2 | # SPDX-FileCopyrightText: Copyright contributors to the vLLM project |
| 3 | |
| 4 | # Description: Test the lazy import module |
| 5 | # The utility function cannot be placed in `vllm.utils` |
| 6 | # this needs to be a standalone script |
| 7 | import sys |
| 8 | |
| 9 | # List of modules that should not be imported too early. |
| 10 | # Lazy import `torch._inductor.async_compile` to avoid creating |
| 11 | # too many processes before we set the number of compiler threads. |
| 12 | # Lazy import `cv2` to avoid bothering users who only use text models. |
| 13 | # `cv2` can easily mess up the environment. |
| 14 | module_names = ["torch._inductor.async_compile", "cv2"] |
| 15 | |
| 16 | # set all modules in `module_names` to be None. |
| 17 | # if we import any modules during `import vllm`, there would be a |
| 18 | # hard error and nice stacktrace on the first import. |
| 19 | for module_name in module_names: |
| 20 | sys.modules[module_name] = None |
| 21 | |
| 22 | import vllm # noqa |