Added 'open' functionality to s3_fs

README.md

@@ -52,6 +52,16 @@ s3_fs.info('s3://csst-prod/gaia/data')
 s3_fs.info('s3://csst-prod/gaia/test/requirements.txt', s3_options=s3_options)
 ```
 
+### Open for read/write
+```python
+from csst_fs import s3_fs
+# open single file
+with s3_fs.open('s3://csst-prod/gaia/data') as file:
+    file.read()
+with s3_fs.open('s3://csst-prod/gaia/test/requirements.txt', s3_options=s3_options, mode='w') as file:
+    file.write("CSST")
+```
+
 ## astropy直接读写s3的写法适配
 ### fits.open
 #### 老写法

csst_fs/s3_fs.py

@@ -12,3 +12,7 @@ def get(rpath, lpath, recursive=False, callback=fsspec.callbacks.DEFAULT_CALLBAC
 def info(path, bucket=None, key=None, refresh=False, version_id=None, s3_options=load_s3_options()) -> dict:
     s3_fs = fsspec.filesystem('s3', **s3_options)
     return s3_fs.info(path, bucket, key, refresh, version_id)
+
+def open(path, s3_options=load_s3_options(), **kwargs):
+    s3_fs = fsspec.filesystem('s3', **s3_options)
+    return s3_fs.open(path, **kwargs)
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