如何在python 3中读取以算术字符开头的行

Question

我正在使用readline来读取文件，但是它的一些行以算术字符开头，readline跳过这一行， 有什么建议吗？

with open(path) as program_file:
for line in program_file:
    line = program_file.readline()
    print(line)

有些行是这样的：

2 4 5
+ 3 #skip this line
_ 5 9

Answer 1

不是以字符开头的行是问题，for line in x和x.readline语句都是从文件中读取一行，所以你可能会打印出替代线。删除readline！

with open(path) as program_file:
    for line in program_file:
        print(line)