feat(projects): 新增Click综合案例示例代码及素材

projects/click-cli/basic/pipeline.py

@@ -0,0 +1,54 @@
+def pipeline(handler, **opts):
+    def decorator(func):
+        def wrapper(*args, **kwargs):
+            result = func(*args, **kwargs)
+            return handler(result, **opts)
+
+        return wrapper
+
+    return decorator
+
+
+def grep(content: str, pattern: str):
+    import re
+
+    filtered = []
+    content = content.splitlines()
+    for line in content:
+        if re.search(pattern, line):
+            filtered.append(line)
+
+    return "\n".join(filtered)
+
+
+def tr(content: str, delete: bool, char: str):
+    final = []
+
+    if delete:
+        content = content.splitlines()
+        for line in content:
+            new_line = line.replace(char, "")
+            final.append(new_line)
+    if final:
+        return "".join(final)
+
+    return content
+
+
+@pipeline(tr, delete=True, char="\n")
+@pipeline(grep, pattern="ed")
+def echo():
+    poetry = """
+Beautiful is better than ugly.
+Explicit is better than implicit.
+Simple is better than complex.
+Complex is better than complicated.
+Flat is better than nested.
+Sparse is better than dense.
+    """
+    return poetry.strip()
+
+
+if __name__ == '__main__':
+    result = echo()
+    print(result)