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Generate Code39 Barcodes with Python3 & Pillow
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| #!/usr/bin/env python | |
| from PIL import Image, ImageFont, ImageDraw | |
| def code39(filepath=".", text="", size=200, orientation="horizontal", printText=False, sizeFactor=8): | |
| code_dict = {"0":"111221211","1":"211211112","2":"112211112","3":"212211111","4":"111221112","5":"211221111","6":"112221111","7":"111211212","8":"211211211","9":"112211211","A":"211112112","B":"112112112","C":"212112111","D":"111122112","E":"211122111","F":"112122111","G":"111112212","H":"211112211","I":"112112211","J":"111122211","K":"211111122","L":"112111122","M":"212111121","N":"111121122","O":"211121121","P":"112121121","Q":"111111222","R":"211111221","S":"112111221","T":"111121221","U":"221111112","V":"122111112","W":"222111111","X":"121121112","Y":"221121111","Z":"122121111","-":"121111212",".":"221111211"," ":"122111211","$":"121212111","/":"121211121","+":"121112121","%":"111212121","*":"121121211"} | |
| upper_text = text.upper() | |
| code_string = ''.join([code_dict[c] + "1" for c in upper_text]) | |
| code_string = "1211212111" + code_string + "121121211" | |
| padding = 5 | |
| code_length = padding * 2 | |
| font = ImageFont.truetype("arial.ttf", 12 * sizeFactor) | |
| text_height = font.getsize(upper_text)[1] + 5 if printText else 0 | |
| code_length += sum([int(e) for e in code_string]) | |
| width = 0 | |
| height = 0 | |
| if(orientation == "horizontal"): | |
| width = code_length * sizeFactor | |
| height = size | |
| else: | |
| height = code_length * sizeFactor | |
| width = size | |
| im = Image.new("L",(width,height + text_height),255) | |
| draw = ImageDraw.Draw(im) | |
| if(printText): | |
| font = ImageFont.truetype("Arial.ttf", 12 * sizeFactor) | |
| textPosition = (width - font.getsize(upper_text)[0]) // 2 | |
| draw.text((textPosition,height),upper_text,0,font) | |
| loc = padding | |
| for i,e in enumerate([int(e) for e in code_string]): | |
| cur_size = loc + e | |
| if(orientation == "horizontal"): | |
| draw.rectangle([loc*sizeFactor,0,cur_size*sizeFactor,height], 0 if (i %2 == 0) else 255) | |
| else: | |
| draw.rectangle([0,loc*sizeFactor,width,cur_size*sizeFactor], 0 if (i %2 == 0) else 255) | |
| loc = cur_size | |
| del(draw) | |
| im = im.rotate(90,expand=True).resize(((height+text_height),width),Image.LANCZOS) | |
| im.save(filepath + "/" + text +".png") | |
| def main(): | |
| l = ['47059016','00000000'] | |
| for code in l: | |
| code39(filepath=".", text=code, size=260, orientation="horizontal", printText=True, sizeFactor=7) | |
| if __name__ == "__main__": | |
| main() |
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