diff --git a/install_requirements.py b/install_requirements.py
new file mode 100644
index 00000000000..5c9ecc182f6
--- /dev/null
+++ b/install_requirements.py
@@ -0,0 +1,168 @@
+#!/usr/bin/env python3
+# Copyright (c) Meta Platforms, Inc. and affiliates.
+# All rights reserved.
+#
+#
+# This source code is licensed under the BSD-style license found in the
+# LICENSE file in the root directory of this source tree.
+
+import os
+import platform
+import re
+import subprocess
+import sys
+
+# Before doing anything, cd to the directory containing this script.
+os.chdir(os.path.dirname(os.path.abspath(__file__)))
+
+
+def python_is_compatible():
+    # Scrape the version range from pyproject.toml, which should be in the current directory.
+    version_specifier = None
+    with open("pyproject.toml", "r") as file:
+        for line in file:
+            if line.startswith("requires-python"):
+                match = re.search(r'"([^"]*)"', line)
+                if match:
+                    version_specifier = match.group(1)
+                    break
+
+    if not version_specifier:
+        print(
+            "WARNING: Skipping python version check: version range not found",
+            file=sys.stderr,
+        )
+        return False
+
+    # Install the packaging module if necessary.
+    try:
+        import packaging
+    except ImportError:
+        subprocess.run(
+            [sys.executable, "-m", "pip", "install", "packaging"], check=True
+        )
+    # Compare the current python version to the range in version_specifier. Exits
+    # with status 1 if the version is not compatible, or with status 0 if the
+    # version is compatible or the logic itself fails.
+    try:
+        import packaging.specifiers
+        import packaging.version
+
+        python_version = packaging.version.parse(platform.python_version())
+        version_range = packaging.specifiers.SpecifierSet(version_specifier)
+        if python_version not in version_range:
+            print(
+                f'ERROR: ExecuTorch does not support python version {python_version}: must satisfy "{version_specifier}"',
+                file=sys.stderr,
+            )
+            return False
+    except Exception as e:
+        print(f"WARNING: Skipping python version check: {e}", file=sys.stderr)
+    return True
+
+
+if not python_is_compatible():
+    sys.exit(1)
+
+# Parse options.
+EXECUTORCH_BUILD_PYBIND = "OFF"
+CMAKE_ARGS = os.getenv("CMAKE_ARGS", "")
+CMAKE_BUILD_ARGS = os.getenv("CMAKE_BUILD_ARGS", "")
+
+for arg in sys.argv[1:]:
+    if arg == "--pybind":
+        EXECUTORCH_BUILD_PYBIND = "ON"
+    elif arg in ["coreml", "mps", "xnnpack"]:
+        if EXECUTORCH_BUILD_PYBIND == "ON":
+            arg_upper = arg.upper()
+            CMAKE_ARGS += f" -DEXECUTORCH_BUILD_{arg_upper}=ON"
+        else:
+            print(f"Error: {arg} must follow --pybind")
+            sys.exit(1)
+    else:
+        print(f"Error: Unknown option {arg}")
+        sys.exit(1)
+
+# Since ExecuTorch often uses main-branch features of pytorch, only the nightly
+# pip versions will have the required features.
+#
+# NOTE: If a newly-fetched version of the executorch repo changes the value of
+# NIGHTLY_VERSION, you should re-run this script to install the necessary
+# package versions.
+NIGHTLY_VERSION = "dev20240716"
+
+# The pip repository that hosts nightly torch packages.
+TORCH_NIGHTLY_URL = "https://download.pytorch.org/whl/nightly/cpu"
+
+# pip packages needed by exir.
+EXIR_REQUIREMENTS = [
+    f"torch==2.5.0.{NIGHTLY_VERSION}",
+    f"torchvision==0.20.0.{NIGHTLY_VERSION}",  # For testing.
+    "typing-extensions",
+]
+
+# pip packages needed for development.
+DEVEL_REQUIREMENTS = [
+    "cmake",  # For building binary targets.
+    "pip>=23",  # For building the pip package.
+    "pyyaml",  # Imported by the kernel codegen tools.
+    "setuptools>=63",  # For building the pip package.
+    "tomli",  # Imported by extract_sources.py when using python < 3.11.
+    "wheel",  # For building the pip package archive.
+    "zstd",  # Imported by resolve_buck.py.
+]
+
+# pip packages needed to run examples.
+# TODO: Make each example publish its own requirements.txt
+EXAMPLES_REQUIREMENTS = [
+    "timm==1.0.7",
+    f"torchaudio==2.4.0.{NIGHTLY_VERSION}",
+    "torchsr==1.0.4",
+    "transformers==4.42.4",
+]
+
+# Assemble the list of requirements to actually install.
+# TODO: Add options for reducing the number of requirements.
+REQUIREMENTS_TO_INSTALL = EXIR_REQUIREMENTS + DEVEL_REQUIREMENTS + EXAMPLES_REQUIREMENTS
+
+# Install the requirements. `--extra-index-url` tells pip to look for package
+# versions on the provided URL if they aren't available on the default URL.
+subprocess.run(
+    [
+        sys.executable,
+        "-m",
+        "pip",
+        "install",
+        *REQUIREMENTS_TO_INSTALL,
+        "--extra-index-url",
+        TORCH_NIGHTLY_URL,
+    ],
+    check=True,
+)
+
+#
+# Install executorch pip package. This also makes `flatc` available on the path.
+# The --extra-index-url may be necessary if pyproject.toml has a dependency on a
+# pre-release or nightly version of a torch package.
+#
+
+# Set environment variables
+os.environ["EXECUTORCH_BUILD_PYBIND"] = EXECUTORCH_BUILD_PYBIND
+os.environ["CMAKE_ARGS"] = CMAKE_ARGS
+os.environ["CMAKE_BUILD_ARGS"] = CMAKE_BUILD_ARGS
+
+# Run the pip install command
+subprocess.run(
+    [
+        sys.executable,
+        "-m",
+        "pip",
+        "install",
+        ".",
+        "--no-build-isolation",
+        "-v",
+        "--extra-index-url",
+        TORCH_NIGHTLY_URL,
+    ],
+    check=True,
+)
diff --git a/install_requirements.sh b/install_requirements.sh
index 97f85a3ee5d..6caaa880e66 100755
--- a/install_requirements.sh
+++ b/install_requirements.sh
@@ -19,156 +19,7 @@ then
   fi
 fi
 
-if [[ "$PYTHON_EXECUTABLE" == "python" ]];
-then
-  PIP_EXECUTABLE=pip
-else
-  PIP_EXECUTABLE=pip3
-fi
-
-# Returns 0 if the current python version is compatible with the version range
-# in pyprojects.toml, or returns 1 if it is not compatible. If the check logic
-# itself fails, prints a warning and returns 0.
-python_is_compatible() {
-  # Scrape the version range from pyproject.toml, which should be
-  # in the current directory.
-  local version_specifier
-  version_specifier="$(
-    grep "^requires-python" pyproject.toml \
-      | head -1 \
-      | sed -e 's/[^"]*"//;s/".*//'
-  )"
-  if [[ -z ${version_specifier} ]]; then
-    echo "WARNING: Skipping python version check: version range not found" >& 2
-    return 0
-  fi
-
-  # Install the packaging module if necessary.
-  if ! python -c 'import packaging' 2> /dev/null ; then
-    ${PIP_EXECUTABLE} install packaging
-  fi
-
-  # Compare the current python version to the range in version_specifier. Exits
-  # with status 1 if the version is not compatible, or with status 0 if the
-  # version is compatible or the logic itself fails.
-${PYTHON_EXECUTABLE} <<EOF
-import sys
-try:
-  import packaging.version
-  import packaging.specifiers
-  import platform
-
-  python_version = packaging.version.parse(platform.python_version())
-  version_range = packaging.specifiers.SpecifierSet("${version_specifier}")
-  if python_version not in version_range:
-    print(
-        "ERROR: ExecuTorch does not support python version "
-        + f"{python_version}: must satisfy \"${version_specifier}\"",
-        file=sys.stderr,
-    )
-    sys.exit(1)
-except Exception as e:
-  print(f"WARNING: Skipping python version check: {e}", file=sys.stderr)
-  sys.exit(0)
-EOF
-
-  return $?
-}
-
-# Fail fast if the wheel build will fail because the current python version
-# isn't supported. But don't fail if the check logic itself has problems: the
-# wheel build will do a final check before proceeding.
-if ! python_is_compatible; then
-  exit 1
-fi
-
-# Parse options.
-EXECUTORCH_BUILD_PYBIND=OFF
-
-for arg in "$@"; do
-  case $arg in
-    --pybind)
-      EXECUTORCH_BUILD_PYBIND=ON
-      ;;
-    coreml|mps|xnnpack)
-      if [[ "$EXECUTORCH_BUILD_PYBIND" == "ON" ]]; then
-        arg_upper="$(echo "${arg}" | tr '[:lower:]' '[:upper:]')"
-        CMAKE_ARGS="$CMAKE_ARGS -DEXECUTORCH_BUILD_${arg_upper}=ON"
-      else
-        echo "Error: $arg must follow --pybind"
-        exit 1
-      fi
-      ;;
-    *)
-      echo "Error: Unknown option $arg"
-      exit 1
-      ;;
-  esac
-done
-
-#
-# Install pip packages used by code in the ExecuTorch repo.
-#
-
-# Since ExecuTorch often uses main-branch features of pytorch, only the nightly
-# pip versions will have the required features.
-#
-# NOTE: If a newly-fetched version of the executorch repo changes the value of
-# NIGHTLY_VERSION, you should re-run this script to install the necessary
-# package versions.
-NIGHTLY_VERSION=dev20240716
-
-# The pip repository that hosts nightly torch packages.
-TORCH_NIGHTLY_URL="https://download.pytorch.org/whl/nightly/cpu"
-
-# pip packages needed by exir.
-EXIR_REQUIREMENTS=(
-  torch=="2.5.0.${NIGHTLY_VERSION}"
-  torchvision=="0.20.0.${NIGHTLY_VERSION}"  # For testing.
-  typing-extensions
-)
-
-# pip packages needed for development.
-DEVEL_REQUIREMENTS=(
-  cmake  # For building binary targets.
-  "pip>=23" # For building the pip package.
-  pyyaml  # Imported by the kernel codegen tools.
-  "setuptools>=63"  # For building the pip package.
-  tomli  # Imported by extract_sources.py when using python < 3.11.
-  wheel  # For building the pip package archive.
-  zstd  # Imported by resolve_buck.py.
-)
-
-# pip packages needed to run examples.
-# TODO(dbort): Make each example publish its own requirements.txt
-EXAMPLES_REQUIREMENTS=(
-  timm==1.0.7
-  torchaudio=="2.4.0.${NIGHTLY_VERSION}"
-  torchsr==1.0.4
-  transformers==4.42.4
-)
-
-# Assemble the list of requirements to actually install.
-# TODO(dbort): Add options for reducing the number of requirements.
-REQUIREMENTS_TO_INSTALL=(
-  "${EXIR_REQUIREMENTS[@]}"
-  "${DEVEL_REQUIREMENTS[@]}"
-  "${EXAMPLES_REQUIREMENTS[@]}"
-)
-
-# Install the requirements. `--extra-index-url` tells pip to look for package
-# versions on the provided URL if they aren't available on the default URL.
-$PIP_EXECUTABLE install --extra-index-url "${TORCH_NIGHTLY_URL}" \
-    "${REQUIREMENTS_TO_INSTALL[@]}"
-
-#
-# Install executorch pip package. This also makes `flatc` available on the path.
-# The --extra-index-url may be necessary if pyproject.toml has a dependency on a
-# pre-release or nightly version of a torch package.
-#
+$PYTHON_EXECUTABLE ./install_requirements.py "$@"
 
-EXECUTORCH_BUILD_PYBIND="${EXECUTORCH_BUILD_PYBIND}" \
-    CMAKE_ARGS="${CMAKE_ARGS}" \
-    CMAKE_BUILD_ARGS="${CMAKE_BUILD_ARGS}" \
-    $PIP_EXECUTABLE install . --no-build-isolation -v \
-        --extra-index-url "${TORCH_URL}"
+# Exit with the same status as the python script.
+exit $?