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| python3 多个多层 dict 合并 问与答 • lanceadd • Dec 8, 2020 • Lastly replied by lanceadd | 5 |
| Reportlab 如何向已经存在 pdf 中的指定位置插入一个饼状图
1 Python • lanceadd • Nov 13, 2020 • Lastly replied by renmu123
|
2 |
| Nest.js 和 Egg.js 选哪个 JavaScript • lanceadd • Jan 19, 2021 • Lastly replied by fengyunselang | 7 |
| 如何解决 Mac 下 vim 中无法使用 commad+c/v 来复制粘贴 Vim • lanceadd • Mar 2, 2020 • Lastly replied by hfpp2012 | 17 |
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| 如何实现 shell 自动填写 ssh 登录密码,用管道和重定向 问与答 • lanceadd • Aug 30, 2019 • Lastly replied by lanceadd | 7 |
| Mac os 的证书本地劫持如何解决
1 问与答 • lanceadd • Aug 10, 2019 • Lastly replied by wonderingray
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3 |
lanceadd's recent replies
Jun 27, 2025 Replied to a topic by zhouxiaoxiao › 程序员 › 如果你的组员，用 controller 直接调用 mapper，是不是可以直接 fire 了 |
emmm 你们还是手搓的 controller 吗，直接写个代码生成器，设计完接口生成一下，controller ，service ，serviceMockImpl 啥的都生成好，然后同事只需要实现那个 service ，xxxServiceImpl 里他想怎么弄都行，最后加个注解 @Primary 把原来 MockImpl 挤下去完事了，避免没必要的手搓就没这些问题
Apr 28, 2025 Replied to a topic by loveyou1 › 旅行 › 大家五一都准备去哪里 |
@LetsGiao 怀旧服吗
Mar 6, 2025 Replied to a topic by puppyxxx › 程序员 › 最近要做一个 AI 应用落地，一些困惑希望有人可以指导 |
@highkay 刚好最近想做这个，star+1 参考下老哥的项目
Feb 19, 2021 Replied to a topic by seventhbible › Python › 请问在将自己的 Python 工程输出 EXE 文件时，如何将 xml 等文件一起打包进去。 |
Dec 8, 2020 Replied to a topic by lanceadd › 问与答 › python3 多个多层 dict 合并 |
解决了
```
def recursive_update(
default: dict,
custom: dict
):
"""
递归更新 dict
:param default:
:param custom:
:return:
"""
if not isinstance(default, dict) or not isinstance(custom, dict):
raise TypeError('Params of recursive_update should be dicts')
for key in custom:
if isinstance(custom[key], dict) and isinstance(default.get(key), dict):
default[key] = recursive_update(default[key], custom[key])
else:
default[key] = custom[key]
return default
```
```
def recursive_update(
default: dict,
custom: dict
):
"""
递归更新 dict
:param default:
:param custom:
:return:
"""
if not isinstance(default, dict) or not isinstance(custom, dict):
raise TypeError('Params of recursive_update should be dicts')
for key in custom:
if isinstance(custom[key], dict) and isinstance(default.get(key), dict):
default[key] = recursive_update(default[key], custom[key])
else:
default[key] = custom[key]
return default
```
Dec 7, 2020 Replied to a topic by lanceadd › 问与答 › python3 多个多层 dict 合并 |
多个嵌套字典合并为一个
Dec 7, 2020 Replied to a topic by lanceadd › 问与答 › python3 多个多层 dict 合并 |
@renmu123 @westoy 抱歉抱歉我也不知道为啥会缺了一块， 发布前预览是没问题的， 另外一个 dict 也是这个，但是 user_id，title_id 这些 key 可能不相同，然后可能层级也不一样，可能会只有两层那种，然后想把一个 dict,update 到另外一个 dict 上，如果那一层的 key 相同 value 不同就合并上去，举个例子按照我上面那个结构，user_id 、title_id 相同但是 relation_id 不同，怎么把它俩合并起来，我原本以为 dict.update()就好了，但是发现对多层的 dict 直接 update 会直接覆盖，然后发现只能一层一层的 update，就很尴尬，除了递归还有啥办法可以更新不同深度的嵌套字典的值吗
Nov 13, 2020 Replied to a topic by lanceadd › Python › Reportlab 如何向已经存在 pdf 中的指定位置插入一个饼状图 |
我会了
```
import io
from PyPDF2 import PdfFileReader, PdfFileWriter
from reportlab.graphics import renderPDF
from reportlab.graphics.charts.piecharts import Pie
from reportlab.graphics.shapes import Drawing
from reportlab.lib.pagesizes import A4
from reportlab.pdfgen import canvas
packet = io.BytesIO()
can = canvas.Canvas(packet, pagesize=A4)
pie = Pie()
pie.data = [20, 10, 5, 5, 5]
pie.labels = ['a', 'b', 'c', 'd', 'e']
pie.sideLabels = True
d = Drawing(100, 100)
d.add(pie)
renderPDF.draw(d, can, 20, 20)
can.save()
packet.seek(0)
new_pdf = PdfFileReader(packet)
existing_pdf = PdfFileReader(open('example_06.pdf', 'rb'))
output = PdfFileWriter()
page = existing_pdf.getPage(0)
page.mergePage(new_pdf.getPage(0))
output.addPage(page)
outputStream = open('result.pdf', 'wb')
output.write(outputStream)
outputStream.close()
```
```
import io
from PyPDF2 import PdfFileReader, PdfFileWriter
from reportlab.graphics import renderPDF
from reportlab.graphics.charts.piecharts import Pie
from reportlab.graphics.shapes import Drawing
from reportlab.lib.pagesizes import A4
from reportlab.pdfgen import canvas
packet = io.BytesIO()
can = canvas.Canvas(packet, pagesize=A4)
pie = Pie()
pie.data = [20, 10, 5, 5, 5]
pie.labels = ['a', 'b', 'c', 'd', 'e']
pie.sideLabels = True
d = Drawing(100, 100)
d.add(pie)
renderPDF.draw(d, can, 20, 20)
can.save()
packet.seek(0)
new_pdf = PdfFileReader(packet)
existing_pdf = PdfFileReader(open('example_06.pdf', 'rb'))
output = PdfFileWriter()
page = existing_pdf.getPage(0)
page.mergePage(new_pdf.getPage(0))
output.addPage(page)
outputStream = open('result.pdf', 'wb')
output.write(outputStream)
outputStream.close()
```
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