BUG: Support %z in Timestamp

Author: saurav-chakravorty

doc/source/whatsnew/v0.24.1.rst

@@ -36,7 +36,7 @@ Enhancements
 
 Bug Fixes
 ~~~~~~~~~
-
+- Bug in :meth: `Timestamp` supporting %z (:issue:`21257`). 
 **Conversion**
 
 -

pandas/_libs/tslibs/timestamps.pyx

@@ -10,6 +10,7 @@ from numpy cimport int64_t, int32_t, int8_t
 cnp.import_array()
 
 from datetime import time as datetime_time, timedelta
+from datetime import timezone
 from cpython.datetime cimport (datetime,
                                PyDateTime_Check, PyDelta_Check, PyTZInfo_Check,
                                PyDateTime_IMPORT)
@@ -736,8 +737,13 @@ class Timestamp(_Timestamp):
             # microsecond[, nanosecond[, tzinfo]]]]]])
             ts_input = datetime(ts_input, freq, tz, unit or 0,
                                 year or 0, month or 0, day or 0)
-            nanosecond = hour
-            tz = minute
+            if isinstance(hour, timezone):
+                print("hello")
+                nanosecond = minute
+                tz = hour
+            else:
+                nanosecond = hour
+                tz = minute
             freq = None
 
         if getattr(ts_input, 'tzinfo', None) is not None and tz is not None:

pandas/tests/scalar/timestamp/test_timestamp.py

@@ -335,6 +335,14 @@ def test_constructor_with_stringoffset(self):
         assert repr(result) == expected
         assert result == eval(repr(result))
 
+        # GH25016
+        # Test support for zone offset with microsecond
+        fmt = '%Y%m%d-%H%M%S-%f%z'
+        ts = '20190129-235348-000001+0000'
+        result = Timestamp.strptime(ts, fmt)
+        expected = "Timestamp('2019-01-29 23:53:48.000001+0000', tz='UTC')"
+        assert repr(result) == expected
+
     def test_constructor_invalid(self):
         with pytest.raises(TypeError, match='Cannot convert input'):
             Timestamp(slice(2))