Directory Listing with size (no sub folders) via Python 05

PS E:\> python getDirSize.py
running on dir "."
Traceback (most recent call last):
  File "getDirSize.py", line 31, in <module>
    listContents();
  File "getDirSize.py", line 23, in listContents
    f.write(c)
  File "C:\Users\Owner\AppData\Local\Programs\Python\Python36\lib\encodings\cp1252.py", line 19, in encode
    return codecs.charmap_encode(input,self.errors,encoding_table)[0]
UnicodeEncodeError: 'charmap' codec can't encode characters in position 11-21: character maps to <undefined>