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from deriva.core import ErmrestCatalog, get_credential
Fill in your desired scheme, hostname and catalog number.
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scheme = 'https'
hostname = None
catalog_number = 1
Use DERIVA-Auth to get a credential or use None if your catalog allows anonymous access.
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credential = None
#credential = get_credential(hostname)
Now, connect to your catalog and the pathbuilder interface for the catalog.
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assert scheme == 'http' or scheme == 'https', "Invalid http scheme used."
assert isinstance(hostname, str), "Hostname not set."
assert isinstance(catalog_number, int), "Invalid catalog number"
catalog = ErmrestCatalog(scheme, hostname, catalog_number, credential)
pb = catalog.getPathBuilder()
Start using the pathbuilder, like this to get a list of your catalog's schema names.
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list(pb.schemas)