IOError：[Errno 2]没有这样的文件或目录：From_file

Question

我正在写我的第一个代码从一个文件复制到另一个，但得到错误作为IOError：[Errno 2]没有这样的文件或目录：。

Please help me in resolving this error.I would really appreciate your help. 


from sys import argv 
from os.path import exists 
#unmask the argument 
script, from_file, to_file = argv 

print "Copying file from %s to %s" %(from_file, to_file) 
raw_input() 

# open the file 

f = open(from_file) 
# read the file in a object 
infile = f.read() 

print "Source file is %d bytes long" %len(infile) 
print "Does the output file exist ? %r " %exists(to_file) 
print "Read, hit RETURN to continue, CTRL-C to abort." 

raw_input() 
out_file = open ('to_file','w') 
out_file.write(infile) 

print "Closing both the files" 
f.close() 
out_file.close() 

Answer 1

变化out_file = open ('to_file','w')到out_file = open (to_file,'w')即除去报价