Methods to Flatten the List in Python Flatten list using for loop Flatten list using List Comprehension Specifying lambda expression within the reduce() method Specifying operator.concat within the reduce() method Flatten list using fitertools.chain() ...
A list is the most flexible data structure in Python. Whereas, a 2D list which is commonly known as a list of lists, is a list object where every item is a list itself - for example:[[1,2,3], [4,5,6], [7,8,9]]. Flattening a list of lists entails converting a 2D list in...
from pyspark.sql.functions import udf from pyspark.sql.types import * def foo(data): return ( list(map( lambda x: ( x["school"], x["advisors"]["advisor1"], x["advisors"]["advisor1"] ), data )) ) struct = ArrayType( StructType([ StructField("school", StringType()), StructFie...