file open "no such file"

[Gary Wessle]

I am getting this error when I try to run the code below

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f = open("~/m", "r")
print f.read()
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:~$ python python/my.py 
Traceback (most recent call last):
  File "python/my.py", line 1, in ?
    f = open("~/m", "r")
IOError: [Errno 2] No such file or directory: '~/m'
****************

but I have the "m" file in my home/username/


thank you