From a4ec6d0aa7b9f43866fbb91326595972e732253a Mon Sep 17 00:00:00 2001
From: Yuval Adam <_@yuv.al>
Date: Fri, 21 Mar 2025 22:51:42 +0100
Subject: Add step init

---
 README.md                      |  4 ++--
 rivulet/pipeline.py            |  4 +++-
 rivulet/tests/test_pipeline.py | 18 ++++++++++++++++++
 3 files changed, 23 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index 08becf1..9b9d744 100644
--- a/README.md
+++ b/README.md
@@ -27,8 +27,8 @@ async def main():
     async for out in pipe:
         print(out)
 
-    # or collect them all
-    res = await pipe.collect()
+    # or just single line it and collect them all
+    res = await Pipeline(source(), double, batch, sum).collect()
 ```
 
 ## License
diff --git a/rivulet/pipeline.py b/rivulet/pipeline.py
index 6efd821..097b1a0 100644
--- a/rivulet/pipeline.py
+++ b/rivulet/pipeline.py
@@ -12,12 +12,14 @@ class Pipeline:
     Each step is a function that takes an async generator and returns a new async generator.
     """
 
-    def __init__(self, source: AsyncGenerator[Any, None]):
+    def __init__(self, source: AsyncGenerator[Any, None], *steps):
         """Initialize the pipeline with a source async generator."""
         self.source = source
         self.steps: List[
             Callable[[AsyncGenerator[Any, None]], AsyncGenerator[Any, None]]
         ] = []
+        for step in steps:
+            self.add_step(step)
 
     def add_step(
         self,
diff --git a/rivulet/tests/test_pipeline.py b/rivulet/tests/test_pipeline.py
index 33462bd..42ac055 100644
--- a/rivulet/tests/test_pipeline.py
+++ b/rivulet/tests/test_pipeline.py
@@ -78,6 +78,24 @@ async def test_empty_pipeline():
     assert results == ["test"]
 
 
+@pytest.mark.asyncio
+async def test_pipeline_init_steps():
+    """Test pipeline with steps init in constructor"""
+
+    async def source():
+        yield "test"
+
+    async def dupe(gen):
+        async for value in gen:
+            for _ in range(3):
+                yield value
+
+    pipeline = Pipeline(source(), dupe, dupe)
+    results = await pipeline.collect()
+
+    assert results == ["test"] * 9
+
+
 @pytest.mark.asyncio
 async def test_pipeline_with_filtering():
     """Test pipeline with a transformation that filters values"""
-- 
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