def _trim_front(strings):
    trimmed = strings
    while len(strings) > 0 and all([x[0] == ' ' for x in trimmed]):
        trimmed = [x[1:] for x in trimmed]
    return trimmed
Returns writer state to serialize in json.
dataset/ETHPy150Open pydata/pandas/pandas/indexes/base.py/_trim_front--crossover with--dataset/ETHPy150Open AppScale/appscale/AppServer/google/appengine/ext/mapreduce/output_writers.py/FileOutputWriterBase.to_json