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[SPARK-20456][PYTHON][FOLLOWUP] Fix timezone-dependent doctests in unix_timestamp and from_unixtime #18597

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[SPARK-20456][PYTHON][FOLLOWUP] Fix timezone-dependent doctests in unix_timestamp and from_unixtime #18597

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4 changes: 4 additions & 0 deletions python/pyspark/sql/functions.py
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Expand Up @@ -1116,9 +1116,11 @@ def from_unixtime(timestamp, format="yyyy-MM-dd HH:mm:ss"):
representing the timestamp of that moment in the current system time zone in the given
format.

>>> spark.conf.set("spark.sql.session.timeZone", "America/Los_Angeles")
>>> time_df = spark.createDataFrame([(1428476400,)], ['unix_time'])
>>> time_df.select(from_unixtime('unix_time').alias('ts')).collect()
[Row(ts=u'2015-04-08 00:00:00')]
>>> spark.conf.unset("spark.sql.session.timeZone")
"""
sc = SparkContext._active_spark_context
return Column(sc._jvm.functions.from_unixtime(_to_java_column(timestamp), format))
Expand All @@ -1133,9 +1135,11 @@ def unix_timestamp(timestamp=None, format='yyyy-MM-dd HH:mm:ss'):

if `timestamp` is None, then it returns current timestamp.

>>> spark.conf.set("spark.sql.session.timeZone", "America/Los_Angeles")
>>> time_df = spark.createDataFrame([('2015-04-08',)], ['dt'])
>>> time_df.select(unix_timestamp('dt', 'yyyy-MM-dd').alias('unix_time')).collect()
[Row(unix_time=1428476400)]
>>> spark.conf.unset("spark.sql.session.timeZone")
"""
sc = SparkContext._active_spark_context
if timestamp is None:
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