make explicit arg for pip args

sdk/python/kubeflow/training/api/training_client.py

@@ -354,6 +354,7 @@ def create_job(
         env_vars: Optional[
             Union[Dict[str, str], List[Union[models.V1EnvVar, models.V1EnvVar]]]
         ] = None,
+        pip_args: Optional[List[str]] = None,
     ):
         """Create the Training Job.
         Job can be created using one of the following options:
@@ -418,7 +419,9 @@ def create_job(
                 https://github.com/kubernetes-client/python/blob/master/kubernetes/docs/V1EnvVar.md)
                 or a kubernetes.client.models.V1EnvFromSource (documented here:
                 https://github.com/kubernetes-client/python/blob/master/kubernetes/docs/V1EnvFromSource.md)
-
+            pip_args: List of args to pass to pip install that applies to all packages specified in
+                packages_to_install. For a full list of args, see the pip documentation
+                https://pip.pypa.io/en/stable/cli/pip_install/
         Raises:
             ValueError: Invalid input parameters.
             TimeoutError: Timeout to create Job.
@@ -486,6 +489,7 @@ def create_job(
                     train_func_parameters=parameters,
                     packages_to_install=packages_to_install,
                     pip_index_url=pip_index_url,
+                    pip_args=pip_args,
                 )
 
             # Get Training Container template.

sdk/python/kubeflow/training/utils/utils.py

@@ -110,21 +110,21 @@ def has_condition(conditions: List[models.V1JobCondition], condition_type: str)
 
 
 def get_script_for_python_packages(
-    packages_to_install: List[str], pip_index_url: str
+    packages_to_install: List[str], pip_index_url: str, pip_args: Optional[List[str]]
 ) -> str:
     """
     Get init script to install Python packages from the given pip index URL.
     """
     packages_str = " ".join([str(package) for package in packages_to_install])
-
+    pip_args_str = " ".join(pip_args) if pip_args is not None else ""
     script_for_python_packages = textwrap.dedent(
         f"""
         if ! [ -x "$(command -v pip)" ]; then
             python -m ensurepip || python -m ensurepip --user || apt-get install python-pip
         fi
 
         PIP_DISABLE_PIP_VERSION_CHECK=1 python -m pip install --quiet \
-        --no-warn-script-location --index-url {pip_index_url} {packages_str}
+        --no-warn-script-location --index-url {pip_index_url} {pip_args_str} {packages_str}
         """
     )
 
@@ -137,6 +137,7 @@ def get_command_using_train_func(
     train_func_parameters: Optional[Dict[str, Any]] = None,
     packages_to_install: Optional[List[str]] = None,
     pip_index_url: str = constants.DEFAULT_PIP_INDEX_URL,
+    pip_args: Optional[List[str]] = None
 ) -> Tuple[List[str], List[str]]:
     """
     Get container args and command from the given training function and parameters.
@@ -180,7 +181,7 @@ def get_command_using_train_func(
     # Install Python packages if that is required.
     if packages_to_install is not None:
         exec_script = (
-            get_script_for_python_packages(packages_to_install, pip_index_url)
+            get_script_for_python_packages(packages_to_install, pip_index_url, pip_args)
             + exec_script
         )