AssertionError:col应该是Column [英] AssertionError: col should be Column

问题描述

如何在PySpark中创建新列，并用今天的日期填充该列?

How to create a new column in PySpark and fill this column with the date of today?

这是我尝试过的:

import datetime
now = datetime.datetime.now()
df = df.withColumn("date", str(now)[:10])

我收到此错误:

AssertionError:col应该是Column

AssertionError: col should be Column

推荐答案

如何在PySpark中创建一个新列，并用今天的日期填充该列?

How to create a new column in PySpark and fill this column with the date of today?

已有功能:

from pyspark.sql.functions import current_date

df.withColumn("date", current_date().cast("string"))

AssertionError:col应该是Column

AssertionError: col should be Column

使用文字

from pyspark.sql.functions import lit

df.withColumn("date", lit(str(now)[:10]))

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