我们从Python开源项目中，提取了以下15个代码示例，用于说明如何使用numpy.datetime_as_string()。
def test_datetime_array_str(self): a = np.array(['2011-03-16', '1920-01-01', '2013-05-19'], dtype='M') assert_equal(str(a), "['2011-03-16' '1920-01-01' '2013-05-19']") a = np.array(['2011-03-16T13:55', '1920-01-01T03:12'], dtype='M') assert_equal(np.array2string(a, separator=', ', formatter={'datetime': lambda x: "'%s'" % np.datetime_as_string(x, timezone='UTC')}), "['2011-03-16T13:55Z', '1920-01-01T03:12Z']") # Check that one NaT doesn't corrupt subsequent entries a = np.array(['2010', 'NaT', '2030']).astype('M') assert_equal(str(a), "['2010' 'NaT' '2030']")
def test_datetime_as_string_timezone(self): # timezone='local' vs 'UTC' a = np.datetime64('2010-03-15T06:30', 'm') assert_equal(np.datetime_as_string(a), '2010-03-15T06:30') assert_equal(np.datetime_as_string(a, timezone='naive'), '2010-03-15T06:30') assert_equal(np.datetime_as_string(a, timezone='UTC'), '2010-03-15T06:30Z') assert_(np.datetime_as_string(a, timezone='local') != '2010-03-15T06:30') b = np.datetime64('2010-02-15T06:30', 'm') assert_equal(np.datetime_as_string(a, timezone=tz('US/Central')), '2010-03-15T01:30-0500') assert_equal(np.datetime_as_string(a, timezone=tz('US/Eastern')), '2010-03-15T02:30-0400') assert_equal(np.datetime_as_string(a, timezone=tz('US/Pacific')), '2010-03-14T23:30-0700') assert_equal(np.datetime_as_string(b, timezone=tz('US/Central')), '2010-02-15T00:30-0600') assert_equal(np.datetime_as_string(b, timezone=tz('US/Eastern')), '2010-02-15T01:30-0500') assert_equal(np.datetime_as_string(b, timezone=tz('US/Pacific')), '2010-02-14T22:30-0800') # Dates to strings with a timezone attached is disabled by default assert_raises(TypeError, np.datetime_as_string, a, unit='D', timezone=tz('US/Pacific')) # Check that we can print out the date in the specified time zone assert_equal(np.datetime_as_string(a, unit='D', timezone=tz('US/Pacific'), casting='unsafe'), '2010-03-14') assert_equal(np.datetime_as_string(b, unit='D', timezone=tz('US/Central'), casting='unsafe'), '2010-02-15')
def export_data_table(self, table, end_date, label, feature_names): """ Save a data set as an HDF table for later reuse. :param table: the DataFrame to save :type table: pandas DataFrame :param end_date: end of labeling period :type end_date: a date format of some kind :param label: name of the column containing labels :type label: str :param feature_names: names of the columns containing features :type feature_names: list :return: the prefix of the HDF filename :rtype: str """ if type(end_date) == np.datetime64: end_date = np.datetime_as_string(end_date, timezone = 'local')[:10] else: end_date = end_date.to_datetime().date().isoformat() file_name = self.export_metadata(end_date, label, feature_names) file_path = '{0}/{1}.h5'.format(self.results_directory, file_name) if not os.path.exists(file_path): store = pd.HDFStore(file_path) store['df'] = table store.close() self.upload_file_to_s3('{0}.h5'.format(file_name), 'hdf_bucket_name', file_path) print("uploaded hdf to s3") return(file_name)
def test_datetime_array_str(self): a = np.array(['2011-03-16', '1920-01-01', '2013-05-19'], dtype='M') assert_equal(str(a), "['2011-03-16' '1920-01-01' '2013-05-19']") a = np.array(['2011-03-16T13:55Z', '1920-01-01T03:12Z'], dtype='M') assert_equal(np.array2string(a, separator=', ', formatter={'datetime': lambda x: "'%s'" % np.datetime_as_string(x, timezone='UTC')}), "['2011-03-16T13:55Z', '1920-01-01T03:12Z']") # Check that one NaT doesn't corrupt subsequent entries a = np.array(['2010', 'NaT', '2030']).astype('M') assert_equal(str(a), "['2010' 'NaT' '2030']")
def test_datetime_as_string_timezone(self): # timezone='local' vs 'UTC' a = np.datetime64('2010-03-15T06:30Z', 'm') assert_equal(np.datetime_as_string(a, timezone='UTC'), '2010-03-15T06:30Z') assert_(np.datetime_as_string(a, timezone='local') != '2010-03-15T06:30Z') b = np.datetime64('2010-02-15T06:30Z', 'm') assert_equal(np.datetime_as_string(a, timezone=tz('US/Central')), '2010-03-15T01:30-0500') assert_equal(np.datetime_as_string(a, timezone=tz('US/Eastern')), '2010-03-15T02:30-0400') assert_equal(np.datetime_as_string(a, timezone=tz('US/Pacific')), '2010-03-14T23:30-0700') assert_equal(np.datetime_as_string(b, timezone=tz('US/Central')), '2010-02-15T00:30-0600') assert_equal(np.datetime_as_string(b, timezone=tz('US/Eastern')), '2010-02-15T01:30-0500') assert_equal(np.datetime_as_string(b, timezone=tz('US/Pacific')), '2010-02-14T22:30-0800') # Dates to strings with a timezone attached is disabled by default assert_raises(TypeError, np.datetime_as_string, a, unit='D', timezone=tz('US/Pacific')) # Check that we can print out the date in the specified time zone assert_equal(np.datetime_as_string(a, unit='D', timezone=tz('US/Pacific'), casting='unsafe'), '2010-03-14') assert_equal(np.datetime_as_string(b, unit='D', timezone=tz('US/Central'), casting='unsafe'), '2010-02-15')
