Python 写入文件缺失行

Question

我在使用 python 将字符串写入文件时遇到问题:(我想做的是使用 python 生成一些 C 程序)我的代码如下:

filename = "test.txt"
i = 0
string = "image"
tempstr = ""
average1 = "average"
average2 = "average*average"
output = ""
FILE = open(filename,"w")
while i < 20:
    j = 0
    output = "square_sum = square_sum + "
    while j < 20:        
        tempstr = string + "_" + str(i) + "_" + str(j)        
        output = output + tempstr + "*" + tempstr + " + " + average2 + " - 2*" + average1 + "*" + tempstr        
        if j != 19:        
            output = output + " + "
        if j == 19:
            output = output + ";"        
        j = j + 1
    output = output + "\n"
    i = i + 1
    print(output)
    FILE.writelines(output)    
FILE.close

打印给了我正确的输出，但是 FILE 缺少最后一行并且缺少一些倒数第二行。将字符串写入文件有什么问题？

谢谢!

Answer 1

如果您调用该方法，可能会有所帮助...

FILE.close()