diff --git a/action.yml b/action.yml
index 4d02a9c..7a1823d 100644
--- a/action.yml
+++ b/action.yml
@@ -46,7 +46,7 @@ runs:
         python3 -m pip install -r "$GITHUB_ACTION_PATH/requirements.txt"
     - name: Run commit-check
       shell: bash
-      run: ${{ github.action_path }}/entrypoint.sh
+      run: python3 ${{ github.action_path }}/main.py
       env:
         MESSAGE: ${{ inputs.message }}
         BRANCH: ${{ inputs.branch }}
diff --git a/entrypoint.sh b/entrypoint.sh
deleted file mode 100755
index 0523cae..0000000
--- a/entrypoint.sh
+++ /dev/null
@@ -1,56 +0,0 @@
-#!/bin/bash
-set -euo pipefail
-
-ret_code=0
-
-run_commit_check(){
-    args=""
-    if [[ "$MESSAGE" == "true" ]]; then
-        args="$args --message"
-    fi
-    if [[ "$BRANCH" == "true" ]]; then
-        args="$args --branch"
-    fi
-    if [[ "$AUTHOR_NAME" == "true" ]]; then
-        args="$args --author-name"
-    fi
-    if [[ "$AUTHOR_EMAIL" == "true" ]]; then
-        args="$args --author-email"
-    fi
-    if [[ "$COMMIT_SIGNOFF" == "true" ]]; then
-        args="$args --commit-signoff"
-    fi
-
-    echo "commit-check $args"
-    commit-check $args > result.txt
-    ret_code=$?
-}
-
-add_job_summary(){
-    if [[ "$JOB_SUMMARY" == "false" ]]; then
-        exit
-    fi
-
-    if [ -s result.txt ]; then
-        # strips ANSI colors
-        sed -i "s,\x1B\[[0-9;]*[a-zA-Z],,g" result.txt
-        cat result.txt
-        echo "### Commit-Check ❌" >> "$GITHUB_STEP_SUMMARY"
-        echo '```' >> "$GITHUB_STEP_SUMMARY"
-        cat result.txt >> "$GITHUB_STEP_SUMMARY"
-        echo '```' >> "$GITHUB_STEP_SUMMARY"
-        ret_code=1
-    else
-        echo "### Commit-Check ✔️" >> "$GITHUB_STEP_SUMMARY"
-        ret_code=0
-    fi
-}
-
-run_commit_check
-add_job_summary
-
-if [[ "$DRY_RUN" == "true" ]]; then
-    ret_code=0
-fi
-
-exit $ret_code
diff --git a/main.py b/main.py
new file mode 100755
index 0000000..2b07aec
--- /dev/null
+++ b/main.py
@@ -0,0 +1,61 @@
+#!/usr/bin/env python3
+import os
+import sys
+import subprocess
+import re
+
+
+def run_commit_check() -> int:
+    args = ["--message", "--branch", "--author-name", "--author-email", "--commit-signoff"]
+    args = [arg for arg, value in zip(args, [MESSAGE, BRANCH, AUTHOR_NAME, AUTHOR_EMAIL, COMMIT_SIGNOFF]) if value == "true"]
+
+    command = ["commit-check"] + args
+    print(" ".join(command))
+    with open("result.txt", "w") as result_file:
+        result = subprocess.run(command, stdout=result_file, stderr=subprocess.PIPE, check=False)
+        return result.returncode
+
+
+def add_job_summary() -> int:
+    if JOB_SUMMARY == "false":
+        sys.exit()
+
+    if os.path.getsize("result.txt") > 0:
+        with open("result.txt", "r") as result_file:
+            result_text = re.sub(r'\x1B\[[0-9;]*[a-zA-Z]', '', result_file.read())  # Remove ANSI colors
+
+        with open(GITHUB_STEP_SUMMARY, "a") as summary_file:
+            summary_file.write("### Commit-Check ❌\n```\n")
+            summary_file.write(result_text)
+            summary_file.write("```")
+        return 1
+    else:
+        with open(GITHUB_STEP_SUMMARY, "a") as summary_file:
+            summary_file.write("### Commit-Check ✔️\n")
+        return 0
+
+
+MESSAGE = os.getenv("MESSAGE", "false")
+BRANCH = os.getenv("BRANCH", "false")
+AUTHOR_NAME = os.getenv("AUTHOR_NAME", "false")
+AUTHOR_EMAIL = os.getenv("AUTHOR_EMAIL", "false")
+COMMIT_SIGNOFF = os.getenv("COMMIT_SIGNOFF", "false")
+DRY_RUN = os.getenv("DRY_RUN", "false")
+JOB_SUMMARY = os.getenv("JOB_SUMMARY", "false")
+GITHUB_STEP_SUMMARY = os.environ["GITHUB_STEP_SUMMARY"]
+
+print(f"MESSAGE = {MESSAGE}")
+print(f"BRANCH = {BRANCH}")
+print(f"AUTHOR_NAME = {AUTHOR_NAME}")
+print(f"AUTHOR_EMAIL = {AUTHOR_EMAIL}")
+print(f"COMMIT_SIGNOFF = {COMMIT_SIGNOFF}")
+print(f"DRY_RUN = {DRY_RUN}")
+print(f"JOB_SUMMARY = {JOB_SUMMARY}\n")
+
+ret_code = run_commit_check()
+ret_code += add_job_summary()  # Combine return codes
+
+if DRY_RUN == "true":
+    ret_code = 0
+
+sys.exit(ret_code)