Merge pull request #195 from jeff1evesque/python_svm_training

#192: Correctly format print in 'python/svm_training.py'
#191: data_validator.py, implement 'json_dumps ({ ... })'
#191: data_validator.py, change 'key1' -> 'error'
Merge pull request #196 from jeff1evesque/python_data_validator

#191: Correctly format print in 'python/data_validator.py'
#192: svm_training.py, replace php with python syntax