20 lines
399 B
Python
20 lines
399 B
Python
import numpy as np
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# reshape
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b1 = np.arange(15)
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# b1 = [ 0 1 2 3 4 5 6 7 8 9 10 11 12 13 14]
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b2 = b1.reshape((3,5))
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# b2 = [[ 0 1 2 3 4]
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# [ 5 6 7 8 9]
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# [10 11 12 13 14]]
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b3 = b2.reshape(-1,3) #无论多少行 回城3列
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b4 = b1.reshape(5,-1) #无论多少列 回城5行
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print(f"b1 = {b1} \n "
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f"b2 = {b2} \n "
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f"b3 = {b3} \n "
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f"b4 = {b4} \n ")
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