Many fonts can not be used

[lidannyapple]

Many fonts can not be used, even the official font DejaVuSansMono.ttf, change a folder can not be used, only some of the fonts are more generic fonts can be used. The DejaVuSansMono.ttf. font in the following code does not work, this font is confirmed to have been installed in the system fonts folder, in other software such as WORD can be used.
I have tried many fonts, some can be used, some can not be used, the barcode can not be made or displayed.

dannyli@126.com

barcode.save(barcode_image_path, options={
'write_text': True,
'quiet_zone': 0.5,
'text_distance': 3,
'module_height': 5.0,
'module_width': 0.2,
'background': "white",
'foreground': "black",
'font_size': 7,
'dpi': 1200,
'margin_bottom': -1,
'margin_top': 0.5,
'guard_height_factor': 1.1,
'center_text': True,
'text_line_distance': 1,
'human': "",#"Human Readable Text",
'text':"", #"Custom Text",
'font_path': os.path.join("C:\windows", "fonts", "DejaVuSansMono.ttf"),
})