["python","yaml","pyyaml"]
Reading YAML file with Python results in yaml.composer.ComposerError: expected a single document in the stream

I have a yaml file that looks like --- level_1: "test" level_2: 'NetApp, SOFS, ZFS Creation' request: 341570 --- level_1: "test" level_2: 'NetApp, SOFS, ZFS Creation' request: 341569 --- level_1: "test" level_2: 'NetApp, SOFS, ZFS Creation' request: 341568 I am able to read this correctly in Perl using YAML but not in python using YAML. It fails with the error: expected a single document in the stream Program: import yaml stram = open("test", "r") print yaml.load(stram) Error: Traceback (most recent call last): File "abcd", line 4, in <module> print yaml.load(stram) File "/usr/local/pkgs/python-2.6.5/lib/python2.6/site-packages/yaml/__init__.py", line 58, in load return loader.get_single_data() File "/usr/local/pkgs/python-2.6.5/lib/python2.6/site-packages/yaml/constructor.py", line 42, in get_single_data node = self.get_single_node() File "/usr/local/pkgs/python-2.6.5/lib/python2.6/site-packages/yaml/composer.py", line 43, in get_single_node event.start_mark) yaml.composer.ComposerError: expected a single document in the stream in "test", line 2, column 1 but found another document in "test", line 5, column 1
The yaml documents are separated by ---, and if any stream (e.g. a file) contains more than one document then you should use the yaml.load_all function rather than yaml.load. The code: import yaml stream = open("test", "r") docs = yaml.load_all(stream, yaml.FullLoader) for doc in docs: for k,v in doc.items(): print k, "->", v print "\n", results in for the input file as provided in the question: request -> 341570 level_1 -> test level_2 -> NetApp, SOFS, ZFS Creation request -> 341569 level_1 -> test level_2 -> NetApp, SOFS, ZFS Creation request -> 341568 level_1 -> test level_2 -> NetApp, SOFS, ZFS Creation