用于合并和计算两个数据文件的python代码中的问题

Question

我在python中有两个代码，其中一个用于合并两个文件，另一个用于将两个文件的行相加。但它们都生成一行的输出文件，而输入文件由8行组成。这是用于合并output.txt和mass.txt两个文件的第一段代码

outfile = open("output.txt", "r")
massfile = open("mass.txt", "r")
finaloutfile = open("final_output.txt", "w")
for line in outfile:
    finaloutfile.write(massfile.readline().rstrip("\n")+" "+line)

outfile.close()
massfile.close()
finaloutfile.close()

第二段代码用于添加两个文件output.txt和earth.txt的行

outfile = open("output.txt", "r")
earthfile = open("earth.txt", "r")
earthoutfile = open("earth_output.txt", "w")
for line in outfile:
    sl = line.split()
    lsl = len(sl)
    msl = earthfile.readline().split()
    idxmsl = 0

    for i in range(lsl-1):
        earthoutfile.write(str(float(sl[i])+float(msl[i]))+" ")
    earthoutfile.write(str(float(sl[lsl-1])+float(msl[lsl-1]))+"\n")

outfile.close()
earthfile.close()
earthoutfile.close()

有什么问题吗？为什么他们不合并或添加或输入文件的行？

Answer 1

关于两个文件的合并，我会写成这样：

outfile = open("output.txt", "r")
massfile = open("mass.txt", "r")
with open("final_output.txt", "a") as finaloutfile:
    outlines = outfile.readlines()
    masslines = massfile.readlines()
    for line in outlines:
        finaloutfile.write(line)
    for line in masslines:
        finaloutfile.write(line)

outfile.close()
massfile.close()

我刚测试过它，它工作正常。