初次提交

util/file.py

@@ -0,0 +1,6 @@
+import os
+
+
+def check_file_exist(file):
+    if not os.path.isfile(file):
+        raise FileNotFoundError("文件不存在：%s" % file)

util/system.py

@@ -0,0 +1,29 @@
+import os
+import platform
+import subprocess
+from typing import Union
+
+
+def check_exec(name: Union[os.PathLike[str], str]) -> bool:
+    if is_windows():
+        check_process = subprocess.Popen([
+            "where.exe", name
+        ], stdout=subprocess.PIPE)
+        check_process.wait()
+        return len(check_process.stdout.readlines()) > 0
+    elif is_linux():
+        check_process = subprocess.Popen([
+            "which", name
+        ])
+        check_process.wait()
+        return check_process.returncode == 0
+    else:
+        return False
+
+
+def is_windows() -> bool:
+    return platform.system().lower() == "windows"
+
+
+def is_linux() -> bool:
+    return platform.system().lower() == "linux"