用‘w+’格式写文件之后，在进行读操作结果没有输出，也没有报错

Question

代码如下
from sys import argv
script, filename = argv
print("we are going to erase %r"%(filename))
print("if you don't want that, hit ^c")
print("if you do want that, hit return")

input("?")

print("opening the file...")
target = open(filename, 'w+')

print("truncating the file")
target.truncate()

print("now i am going to ask you for three lines")

line1 = input("line 1: ")
line2 = input("line 2: ")
line3 = input("line 3: ")

print("i am going to write these to the file")

target.write(line1)
target.write("\n")
target.write(line2)
target.write("\n")
target.write(line3)
target.write("\n")

print("now this is your new file")
print(target.read())
#不知道为什么没有打出来，也没报错

print("and finally, we close it")
target.close()

Answer 1

你的文件名和文件路径是什么，用绝对路径试试看。检查下对应目录的权限，或者用管理员模式运行