Python中的 numpy.trim_zeros()

numpy.trim_zeros函数用于从一维数组或序列中修剪前导和/或尾随零。

Syntax: numpy.trim_zeros(arr, trim)

Parameters:
arr : 1-D array or sequence
trim : trim is an optional parameter with default value to be ‘fb'(front and back) we can either select ‘f'(front) and ‘b’ for back.

Returns: trimmed : 1-D array or sequence (without leading and/or trailing zeros as per user’s choice)

代码 1：

import numpy as geek 
  
gfg = geek.array((0, 0, 0, 0, 1, 5, 7, 0, 6, 2, 9, 0, 10, 0, 0))
  
# without trim parameter
# returns an array without leading and trailing zeros 
  
res = geek.trim_zeros(gfg)
print(res)

Output :array([1, 5, 7, 0, 6, 2, 9, 0, 10])

代码 2：

import numpy as geek 
gfg = geek.array((0, 0, 0, 0, 1, 5, 7, 0, 6, 2, 9, 0, 10, 0, 0))
  
# without trim parameter
# returns an array without any leading  zeros 
  
res = geek.trim_zeros(gfg, 'f')
print(res)

Output :array([1, 5, 7, 0, 6, 2, 9, 0, 10, 0, 0])

代码 3：

import numpy as geek 
gfg = geek.array((0, 0, 0, 0, 1, 5, 7, 0, 6, 2, 9, 0, 10, 0, 0))
  
# without trim parameter
# returns an array without any trailing  zeros 
  
res = geek.trim_zeros(gfg, 'b')
print(res)

Output :array([0, 0, 0, 0, 1, 5, 7, 0, 6, 2, 9, 0, 10])