Python filter function filter () filters a sequence instance using a custom function

Filter function:

The filter () function allows filtering of sequences, meaning that a custom function can be used to filter a sequence, to process each item of the sequence into a custom filter function, and to return the result for filtering. Finally returns the filtered results once.

The filter () function has two parameters:

First, custom function name, required
The second, the column that needs to be filtered, is also necessary

DEMO

requirements, filter more than 5 less than 10 of the number:

The code is as follows:

# Coding=utf8
# defines a function greater than 5 less than 10
def guolvhanshu (num):
If Num>5 and num<10:
Return num

# define a sequence
Seq= (12,50,8,17,65,14,9,6,14,5)

# Use the filter function
Result=filter (GUOLVHANSHU,SEQ)

# (8,9,6)
Print result

Execution Result:

The code is as follows:

(8, 9, 6)

Because 8,9,6 is more than 5, less than 10 is filtered down.

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