Ñò ‚Ic @ s7 d Z d d k Z d d k Z d „ Z d d „ Z d S( s Create random secrets. iÿÿÿÿNc C se y t i | ƒ SWnM t j oA d i g } t | ƒ D] } | t t i d ƒ ƒ q9 ~ ƒ SXd S( s{ Return a string of the given length. Uses ``os.urandom`` if it can, or just pseudo-random numbers otherwise. t i N( t ost urandomt AttributeErrort joint xranget chrt randomt randrange( t lengtht _[1]t i( ( s<