1. 读入一个Python程序，将其单行的注释（即 每一行“#”后面的内容）删除后保存;

1. 读入一个Python程序，将其单行的注释（即 每一行“#”后面的内容）删除后保存;

with open('05_day.py','r+') as f:with open('new.txt','w+') as f1:l = f.readlines()li = []print(l)for i in l:if i.startswith('#'):i = ''else:j = ili.append(j)print(li)for n in li:f1.write(n)f1.seek(0,0)print(f1.read())