代码：
[email protected]:/study/python# cat write.py
#!/usr/bin/python
output_file = open("test.txt","w")
output_file.write("write test\n")
output_file.close()
output_file = open("test.txt","a")
output_file.write("write test\n")
output_file.close()
def sum(input_file, output_file):
for line in input_file:
operands = line.split()
print 'operands', operands
sum = float(operands[0]) + float(operands[1])
new_line = line.rstrip() + ' ' + str(sum) + '\n'
output_file.write(new_line)
return
if __name__ == "__main__":
infile = open("data_in.txt","r")
outfile = open("data_out.txt","w")
sum(infile, outfile)
infile.close()
outfile.close()
输入文件的内容：
[email protected]:/study/python# cat data_in.txt
111 222
111 333
222 222
222 444
执行过程：
[email protected]:/study/python# ./write.py
operands [‘111‘, ‘222‘]
operands [‘111‘, ‘333‘]
operands [‘222‘, ‘222‘]
operands [‘222‘, ‘444‘]
[email protected]:/study/python#
执行后，输出文件的结果：
[email protected]:/study/python# cat data_out.txt
111 222 333.0
111 333 444.0
222 222 444.0
222 444 666.0
[email protected]:/study/python#
时间： 2024-10-27 00:56:26