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Days between two dates? [duplicate]
...r days, or groups of 24 hours?
For simply 24 hours, assuming you're using Python's datetime, then the timedelta object already has a days property:
days = (a - b).days
For calendar days, you'll need to round a down to the nearest day, and b up to the nearest day, getting rid of the partial day o...
Scratch还是App Inventor？低代码编程工具2026终极横评：谁才是真正的入门...
...（如fun123.cn）本土化完善
维度：进阶路径
Scratch：→ Python/JavaScript
App Inventor 2：→ Python/Java/Kotlin
详细对比
场景1：给小学生做编程启蒙
如果你的孩子刚上小学，从来没有接触过编程，Scratch是更温和的起点。它的舞...
Disable Enable Trigger SQL server for a table
...ay 4 '15 at 14:57
Guillermo Gutiérrez
14.9k1414 gold badges8080 silver badges107107 bronze badges
answered Oct 2 '10 at 0:47
...
How to store a dataframe using Pandas
...tter for interoperability, as a faster alternative to JSON, or if you have python object/text-heavy data (see this question).
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Open application after clicking on Notification
...ug 31 '18 at 21:25
Gastón Saillén
7,72144 gold badges3030 silver badges4848 bronze badges
answered Aug 4 '15 at 9:30
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Why does pylint object to single character variable names?
I'm still getting used to python conventions and using pylint to make my code more pythonic, but I'm puzzled by the fact that pylint doesn't like single character variable names. I have a few loops like this:
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ValueError: The truth value of an array with more than one element is ambiguous. Use a.any() or a.al
... the two arrays to be evaluated in boolean context (by
calling __bool__ in Python3 or __nonzero__ in Python2).
Your original code
mask = ((r["dt"] >= startdate) & (r["dt"] <= enddate))
selected = r[mask]
looks correct. However, if you do want and, then instead of a and b use (a-b).any...
Filtering DataGridView without changing datasource
...ul 23 '18 at 7:27
Guillermo Gutiérrez
14.9k1414 gold badges8080 silver badges107107 bronze badges
answered Oct 24 '16 at 9:14
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Counting inversions in an array
...
In Python
# O(n log n)
def count_inversion(lst):
return merge_count_inversion(lst)[1]
def merge_count_inversion(lst):
if len(lst) <= 1:
return lst, 0
middle = int( len(lst) / 2 )
left, a = merge_cou...
Get list of all routes defined in the Flask app
...ution above is too complex.
Just open a new shell under your project:
python
>>> from app import app
>>> app.url_map
The first 'app' is my project script: app.py,
another is my web's name.
(this solution is for tiny web with a little route)
...