Python numpy.datetime_as_string() 使用实例

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Example 1

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']") 

Example 2

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') 

Example 3

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) 

Example 4

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']") 

Example 5

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') 

Example 6

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']") 

Example 7

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') 

Example 8

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']") 

Example 9

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') 

Example 10

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']") 

Example 11

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') 

Example 12

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']") 

Example 13

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') 

Example 14

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']") 

Example 15

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') 
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