[Mne_analysis] option preload=True versus preload='True'

[Burkhard Maess]

Hallo, dear MNE-Python team,

recently, I realized that the preload option in mne.io.read_raw_fif offers more than I expected. Below is the line of code, which provides the expected bahaviour, i.e. it opens the rawdata fif file and preloads the data into RAM:
rawdata = mne.io.read_raw_fif(name_of_rawdata_fif,preload=True)

Changing the type of the option value from boolean into string does not throw an error message, but instead it creates a file called True within the current working directory. This is obsiously no preloading into RAM, isn't it? Or does this file work as a buffer? Is this behavior intended or a bug?
rawdata = mne.io.read_raw_fif(name_of_rawdata_fif,preload='True')

Interestingly, the loglevel DEBUG does not tell about creating the funny file True.

cheers,
Burkhard



--
Dr. Burkhard Maess
Max Planck Institute for Human Cognitive and Brain Sciences
Stephanstr. 1a, D-04301 Leipzig, Germany
phone/fax: +49 341 9940-2526/-2511   mail: maess 'at' cbs.mpg.de,   http://www.cbs.mpg.de