python基础用法_for i in range(datalen)

读取文本数据

f=open("probe.txt")
line=f.readline()
data2=[]
while line:
	data1=range(3)
    data=line.split(" ")
    for i in range(len(data)):
        data1[i]=float(data[i])
    line=f.readline()
    data2.append(data1)
f.close()
for i in range(len(data2)):
    print(data2[i])
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二维数组冒泡排序

def bubbleSort2(arr):
    n = len(arr)
    for i in range(n):
        for j in range(0, n-i-1):
            if arr[j][2] > arr[j+1][2] :
                arr[j], arr[j+1] = arr[j+1], arr[j]

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