def make_qrcode(some_text, directory) :
    '''this turns some text data into a qrcode'''
    import qrcode
    from PIL import Image, ImageDraw, ImageFont 
    from os import chdir, listdir
    chdir(directory)
    if type(some_text) != str :
        print('input', some_text, 'is not a string')
        raise TypeError
    myfont = ImageFont.truetype('/usr/share/fonts/truetype/freefont/FreeSansBold.ttf',40) 
    qr = qrcode.QRCode(version=1, error_correction=qrcode.constants.ERROR_CORRECT_Q, box_size=10, border=1)
    print('data=',some_text)
    qr.add_data(some_text)
    qr.make()
    img = qr.make_image()
    img_w, img_h = img.size
    background = Image.new('RGB',(290,290),(255,255,255))
    bg_w, bg_h = background.size
    offset = ((bg_w - img_w) // 2, 0)
    background.paste(img, offset)
    I1 = ImageDraw.Draw(background)
    I1.text((120,250),str(some_text),font=myfont,fill=0)
    print(type(background))
    background.save(some_text + '.jpg')
    background.save(some_text + '.png')
    return

if __name__ == '__main__' :
    for indx in range(100,400) :
        name = str(indx).zfill(3)
        make_qrcode(name, '/home/tomtaylor/exams_/qrcodes')