add file includes several methods include remove, copy and etc.

pydu/file.py

@@ -0,0 +1,70 @@
+import os
+import sys
+import shutil
+
+
+# todo tests and docs
+def makedirs(path, mode=0o755, *, ignore_errors=False):
+    try:
+        os.makedirs(path, mode, exist_ok=True)
+    except Exception:
+        if not ignore_errors:
+            raise OSError('Create dir: {} error'.format(path))
+
+
+def remove(path, *, ignore_errors=False, onerror=None):
+    if ignore_errors:
+        def onerror(*args):
+            pass
+    elif onerror is None:
+        def onerror(*args):
+            raise OSError('Remove path: {} error'.format(path))
+
+    if os.path.isdir(path):
+        shutil.rmtree(path, ignore_errors=ignore_errors, onerror=onerror)
+    else:
+        try:
+            os.remove(path)
+        except Exception:
+            onerror(os.remove, path, sys.exc_info())
+
+
+def removes(*paths, ignore_errors=False, onerror=None):
+    for path in paths:
+        remove(path, ignore_errors=ignore_errors, onerror=onerror)
+
+
+def open_file(path, mode='wb+', *, buffer_size=-1, ignore_errors=False):
+    f = None
+    try:
+        if path and not os.path.isdir(path):
+            makedirs(os.path.dirname(path))
+            f = open(path, mode, buffer_size)
+    except Exception:
+        if not ignore_errors:
+            raise OSError('Open file: {} error'.format(path))
+    return f
+
+
+def link(src, dst, *, overwrite=False, ignore_errors=False):
+    try:
+        if os.path.exists(dst):
+            if overwrite:
+                remove(dst)
+            else:
+                return
+        os.link(src, dst)
+    except Exception:
+        if not ignore_errors:
+            raise OSError('Link {} to {} error'.format(dst, src))
+
+
+def copy(src, dst, *, ignore_errors=False, follow_symlinks=True):
+    try:
+        if os.path.isdir(src):
+            shutil.copytree(src, dst, symlinks=not follow_symlinks)
+        else:
+            shutil.copy(src, dst, follow_symlinks=follow_symlinks)
+    except Exception:
+        if not ignore_errors:
+            raise OSError('Copy {} to {} error'.format(src, dst))