在 Python 中返回一個包含子字串非重疊出現次數的陣列
要返回一個包含子字串非重疊出現次數的陣列,請在 Python Numpy 中使用 numpy.char.count() 方法。第一個引數是 sub,即要搜尋的子字串。numpy.char 模組為 numpy.str_ 型別的陣列提供了一組向量化的字串操作。
步驟
首先,匯入所需的庫 -
import numpy as np
建立一個一維字串陣列 -
arr = np.array(['kATIE', 'JOHN', 'KAte', 'AmY', 'BRADley'])
顯示我們的陣列 -
print("Array...\n",arr)
獲取資料型別 -
print("\nArray datatype...\n",arr.dtype)
獲取陣列的維度 -
print("\nArray Dimensions...\n",arr.ndim)
獲取陣列的形狀 -
print("\nOur Array Shape...\n",arr.shape)
獲取陣列的元素數量 -
print("\nNumber of elements in the Array...\n",arr.size)
要返回一個包含子字串非重疊出現次數的陣列,請在 Python Nump 中使用 numpy.char.count() 方法。第一個引數是 sub,即要搜尋的子字串 -
print("\nResult (count)...\n",np.char.count(arr, 'A'))
示例
import numpy as np # Create a One-Dimensional array of strings arr = np.array(['kATIE', 'JOHN', 'KAte', 'AmY', 'BRADley']) # Displaying our array print("Array...\n",arr) # Get the datatype print("\nArray datatype...\n",arr.dtype) # Get the dimensions of the Array print("\nArray Dimensions...\n",arr.ndim) # Get the shape of the Array print("\nOur Array Shape...\n",arr.shape) # Get the number of elements of the Array print("\nNumber of elements in the Array...\n",arr.size) # To return an array with the number of non-overlapping occurrences of substring, use the numpy.char.count() method in Python Numpy # The first parameter is the sub i.e. the substring to search for print("\nResult (count)...\n",np.char.count(arr, 'A'))
輸出
Array... ['kATIE' 'JOHN' 'KAte' 'AmY' 'BRADley'] Array datatype... <U7 Array Dimensions... 1 Our Array Shape... (5,) Number of elements in the Array... 5 Result (count)... [1 0 1 1 1]
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