Python - File does not exist error
Question: I'm trying to do a couple things here with the script below (it is
incomplete). The first thing is to loop through some subdirectories. I was
able to do that successfully. The second thing was to open a specific file (it
is the same name in each subdirectory) and find the minimum and maximum value
in each column EXCEPT the first.

Right now I'm stuck on finding the max value in a single column because the
files I'm reading have two rows which I want to ignore. Unfortunately, I'm
getting the following error when attempting to run the code:

    
    
    Traceback (most recent call last):
      File "test_script.py", line 22, in <module>
        with open(file) as f:
    IOError: [Errno 2] No such file or directory: 'tc.out'
    

Here is the current state of my code:

    
    
    import scipy as sp
    import os
    
    rootdir = 'mydir'; #mydir has been changed from the actual directory path
    data = []
    
    for root, dirs, files in os.walk(rootdir):
        for file in files:
            if file == "tc.out":
                with open(file) as f:
                    for line in itertools.islice(f,3,None):
                        for line in file:
                        fields = line.split()
                        rowdata = map(float, fields)
                        data.extend(rowdata)
                        print 'Maximum: ', max(data)
    


Answer: To open a file you need to specify full path. You need to change the line

    
    
    with open(file) as f:
    

to

    
    
    with open(os.path.join(root, file)) as f:
    

