示例:
writeFile = open('write.txt', 'w')
for i in range(1, 1000):
data = str(i) + 'aaaaaaaaaaaaaaaaaaaaaaaaaa\n'
writeFile.write(data)
结果生成的文件只有798行:
问题原因:
要写入的内容依然在缓冲区中,没有写入文件
两种解决方法:
1.使用flush()函数;
writeFile = open('write.txt', 'w')
for i in range(1, 1000):
data = str(i) + 'aaaaaaaaaaaaaaaaaaaaaaaaaa\n'
writeFile.write(data)
writeFile.flush()
2.正确的调用close()函数;
writeFile = open('write.txt', 'w')
for i in range(1, 1000):
data = str(i) + 'aaaaaaaaaaaaaaaaaaaaaaaaaa\n'
writeFile.write(data)
writeFile.close()
参考文档: