将文件保存在python的目录中[重复]答案

【问题标题】：Save files in a directory in python [duplicate]将文件保存在python的目录中[重复]
【发布时间】：2020-01-22 09:04:21
【问题描述】：

我正在尝试在我的应用中为每个项目创建条形码

代码如下：

from base64 import b64encode
from reportlab.lib import units
from reportlab.graphics import renderPM
from reportlab.graphics.barcode import createBarcodeDrawing
from reportlab.graphics.shapes import Drawing

def get_barcode(value, width, barWidth = 0.05 * units.inch, fontSize = 30):

    barcode = createBarcodeDrawing('Code128', value = value, barWidth = barWidth, fontSize = fontSize)

    drawing_width = width
    barcode_scale = drawing_width / barcode.width
    drawing_height = barcode.height * barcode_scale

    drawing = Drawing(drawing_width, drawing_height)
    drawing.scale(barcode_scale, barcode_scale)
    drawing.add(barcode, name='barcode')
    return drawing

sku = ['A100', 'A101', 'A102', 'A103', 'A104', 'A105', 'A106', 'A107', 'A108', 'A109']

for i in sku:
    barcode = get_barcode(value = i, width = 600)
    data = b64encode(renderPM.drawToString(barcode, fmt = 'PNG'))

如何将每个文件保存在桌面位置，即r'C:\Users\Rahul\Desktop'，文件名为 SKU 名称？

【问题讨论】：

这能回答你的问题吗？ Save Image generated with Reportlab in my MEDIA folder (in Amazon S3)
@RamonMedeiros 抱歉，没有。我想将条形码存储在本地计算机上，而不是 S3 上
请添加适当的标签并编辑标题。现在太宽泛了。
是的，但显示了如何保存：barcode.save(formats=['gif','pdf'],outDir=path_to_save,fnRoot=filename)

标签： python python-3.x

【解决方案1】：

这对你有用吗（更改输出路径）

#!/usr/bin/env python3
# -*- coding: utf-8 -*-
__author__ = 'g3n35i5'

import os
import base64
from reportlab.lib import units
from reportlab.graphics import renderPM
from reportlab.graphics.barcode import createBarcodeDrawing
from reportlab.graphics.shapes import Drawing


def get_barcode(value, width, barWidth=0.05 * units.inch, fontSize=30):
    barcode = createBarcodeDrawing('Code128', value=value, barWidth=barWidth, fontSize=fontSize)

    drawing_width = width
    barcode_scale = drawing_width / barcode.width
    drawing_height = barcode.height * barcode_scale

    drawing = Drawing(drawing_width, drawing_height)
    drawing.scale(barcode_scale, barcode_scale)
    drawing.add(barcode, name='barcode')
    return drawing


sku = ['A100', 'A101', 'A102', 'A103', 'A104', 'A105', 'A106', 'A107', 'A108', 'A109']

output_path = '/tmp/barcodes/'
if not os.path.exists(output_path):
    os.mkdir(output_path)

for i in sku:
    barcode = get_barcode(value=i, width=600)
    data = base64.b64encode(renderPM.drawToString(barcode, fmt='PNG'))
    filename = os.path.join(output_path, f"{i}.png")
    with open(filename, "wb") as fh:
        fh.write(base64.decodebytes(data))

【讨论】：