import os
for i in os.listdir('.'):
    if os.path.isdir(i):
        print i
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import os
cmd = "dir /b /ad"
for i in os.popen(cmd).readlines():
    print i,
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import os
for root, dirs, files in os.walk('.'):
    for i in dirs:
        print i
    break
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print(...)
    print(value, ..., sep=' ', end='\n', file=sys.stdout)
    
    Prints the values to a stream, or to sys.stdout by default.
    Optional keyword arguments:
    file: a file-like object (stream); defaults to the current sys.stdout.
    sep:  string inserted between values, default a space.
    end:  string appended after the last value, default a newline.
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