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numpy.DataSource.exists
- DataSource.exists(path)[source]
- 
    Test if path exists. Test if pathexists as (and in this order):- a local file.
- a remote URL that has been downloaded and stored locally in the DataSourcedirectory.
- a remote URL that has not been downloaded, but is valid and accessible.
 Parameters: path : str Can be a local file or a remote URL. Returns: out : bool True if pathexists.NotesWhen pathis an URL,existswill return True if it’s either stored locally in theDataSourcedirectory, or is a valid remote URL.DataSourcedoes not discriminate between the two, the file is accessible if it exists in either location.
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 https://docs.scipy.org/doc/numpy-1.13.0/reference/generated/numpy.DataSource.exists.html