Question

我目前正在尝试用python写入CSV文件，但我只想每60次迭代打印一次'CurrentInv'。例如

outfile = open("Pension.csv", 'w')
for k in range(1,Iterations+1):
    outfile.write(str( str(k) + ','))
    outfile.write(str(CurrentInv[k][0])+',')
    outfile.write(str(CurrentInv[k][60])+',')
    outfile.write(str(CurrentInv[k][120])+',')
    outfile.write(str(CurrentInv[k][180])+',')
    outfile.write(str(CurrentInv[k][240])+',')
    outfile.write(str(CurrentInv[k][300])+',')
    outfile.write(str(CurrentInv[k][360])+',')
    outfile.write(str('\n'))
outfile.close()

但我想在一个循环中获得这个。我试过了

 outfile = open("Pension5.csv", 'w')
 for k in range(1,Iterations+1):
     outfile.write(str( str(k) + ','))
     for i in range(0,Months+1):
        outfile.write(str(CurrentInv[k][i])+',')
        i=i+60
     outfile.write(str('\n'))
 outfile.close()`

但是，这仍然会将CurrentInv的所有值从0打印到几个月而不是每60次迭代。任何帮助将不胜感激！

Answer 1

尝试以下方法：

with open("Pension5.csv", 'w') as outfile:
    for k in range(1, Iterations+1):
        outfile.write(str(str(k) + ','))
        for i in range(0, Months+1, 60):
            outfile.write(str(CurrentInv[k][i]) + ',')
        outfile.write(str('\n'))

它为范围指定了60的步长，以便每次迭代添加60而不是1.在示例情况下，月份应为360。如果您希望Months为6而不是360，请检查以下内容：

with open("Pension5.csv", 'w') as outfile:
    for k in range(1, Iterations+1):
        outfile.write(str(str(k) + ','))
        for i in range(0, Months+1):
            outfile.write(str(CurrentInv[k][i*60]) + ',')
        outfile.write(str('\n'))

使用'for'循环在Python中写入CSV文件

1 个答案: