问题是如何对多列数据进行排序。
您将根据从数组的列构建的字符串进行排序。
rows = ...# your source data
def date_to_sortable_string(date):
# use datetime package to convert string to sortable date.
pass
# Assume x[0] === patient_id and x[1] === encounter date
# Sort by patient_id and date
rows_sorted = sorted(rows, key=lambda x: "%0.5d-%s" % (x[0], date_to_sortable_string(x[1])))
for row in rows_sorted:
print row
602392714
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