Source code for langchain_core.sys_info
"""**sys_info** prints information about the system and langchain packages
for debugging purposes.
"""
from typing import List, Sequence
def _get_sub_deps(packages: Sequence[str]) -> List[str]:
"""Get any specified sub-dependencies."""
from importlib import metadata
sub_deps = set()
_underscored_packages = set(pkg.replace("-", "_") for pkg in packages)
for pkg in packages:
try:
required = metadata.requires(pkg)
except metadata.PackageNotFoundError:
continue
if not required:
continue
for req in required:
try:
cleaned_req = req.split(" ")[0]
except Exception: # In case parsing of requirement spec fails
continue
if cleaned_req.replace("-", "_") not in _underscored_packages:
sub_deps.add(cleaned_req)
return sorted(sub_deps, key=lambda x: x.lower())
[docs]def print_sys_info(*, additional_pkgs: Sequence[str] = tuple()) -> None:
"""Print information about the environment for debugging purposes.
Args:
additional_pkgs: Additional packages to include in the output.
"""
import pkgutil
import platform
import sys
from importlib import metadata, util
# Packages that do not start with "langchain" prefix.
other_langchain_packages = [
"langserve",
"langgraph",
"langsmith",
]
langchain_pkgs = [
name for _, name, _ in pkgutil.iter_modules() if name.startswith("langchain")
]
all_packages = sorted(
set(langchain_pkgs + other_langchain_packages + list(additional_pkgs))
)
# Always surface these packages to the top
order_by = ["langchain_core", "langchain", "langchain_community", "langsmith"]
for pkg in reversed(order_by):
if pkg in all_packages:
all_packages.remove(pkg)
all_packages = [pkg] + list(all_packages)
system_info = {
"OS": platform.system(),
"OS Version": platform.version(),
"Python Version": sys.version,
}
print() # noqa: T201
print("System Information") # noqa: T201
print("------------------") # noqa: T201
print("> OS: ", system_info["OS"]) # noqa: T201
print("> OS Version: ", system_info["OS Version"]) # noqa: T201
print("> Python Version: ", system_info["Python Version"]) # noqa: T201
# Print out only langchain packages
print() # noqa: T201
print("Package Information") # noqa: T201
print("-------------------") # noqa: T201
not_installed = []
for pkg in all_packages:
try:
found_package = util.find_spec(pkg)
except Exception:
found_package = None
if found_package is None:
not_installed.append(pkg)
continue
# Package version
try:
package_version = metadata.version(pkg)
except Exception:
package_version = None
# Print package with version
if package_version is not None:
print(f"> {pkg}: {package_version}") # noqa: T201
else:
print(f"> {pkg}: Installed. No version info available.") # noqa: T201
if not_installed:
print() # noqa: T201
print("Optional packages not installed") # noqa: T201
print("-------------------------------") # noqa: T201
for pkg in not_installed:
print(f"> {pkg}") # noqa: T201
sub_dependencies = _get_sub_deps(all_packages)
if sub_dependencies:
print() # noqa: T201
print("Other Dependencies") # noqa: T201
print("------------------") # noqa: T201
for dep in sub_dependencies:
try:
dep_version = metadata.version(dep)
print(f"> {dep}: {dep_version}") # noqa: T201
except Exception:
print(f"> {dep}: Installed. No version info available.") # noqa: T201
if __name__ == "__main__":
print_sys_info()