Home
Sign Up
Sign In
推荐学习书目
›
Learn Python the Hard Way
Python Sites
›
PyPI
- Python Package Index
›
http://diveintopython.org/toc/index.html
›
Pocoo
值得关注的项目
›
PyPy
›
Celery
›
Jinja2
›
Read the Docs
›
gevent
›
pyenv
›
virtualenv
›
Stackless Python
›
Beautiful Soup
›
结巴中文分词
›
Green Unicorn
›
Sentry
›
Shovel
›
Pyflakes
›
pytest
Python 编程
›
pep8 Checker
Styles
›
PEP 8
›
Google Python Style Guide
›
Code Style from The Hitchhiker's Guide
V2EX
›
Python
Python Pandas 有没有办法只识别大写字符串“NULL”为空值,而不包括小写字符串“null”
flgn88
·
Jun 27, 2020
· 2513 views
This topic created in 2324 days ago, the information mentioned may be changed or developed.
如题。
null
空值
Python
pandas
3 replies
widewing
Jun 27, 2020 via Android
1
df[df=='NULL']=None
Porphet
Jun 27, 2020
2
我能想到的只有正则,如果你说的“NULL”是一种字符串,而且能够被正确读取到
vinceguo
Jun 27, 2020 via Android
3
很多函数有个参数是 na_values,注意看文档
About
·
Help
·
Advertise
·
Blog
·
API
·
FAQ
·
Privacy
·
Solana
·
1484 Online
Highest 6679
·
Select Language
创意工作者们的社区
World is powered by solitude
VERSION: 3.9.8.5 · 26ms ·
UTC 15:38
·
PVG 23:38
·
LAX 07:38
·
JFK 10:38
♥ Do have faith in what you're doing.
❯