Python programming exercises, I

Python idiom: execute ut.main() iff this file is the main script, i.e., it is not being read as a module. Python IIR. Murri, Large Scale Computing Infrastructures, Nov. 10, 2011 ... command-line. The rename.py command should rename all files in directory DIR, that end with extension ext1 to end with extension ext2 instead. Python IIR. Murri ... ................
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