This question already has answers here:
How can I obtain the element-wise logical NOT of a pandas Series?
(6 answers)
Closed 3 years ago.
Hi I am trying to get the opposite values to between
I get a few data of this way:
x[x.between(x.quantile(0.25), x.quantile(0.75))]
But I need the opposite data, how can get it?
Thanks
You can use the ~ to negate.
x[~x.between(x.quantile(0.25), x.quantile(0.75))]
Related
This question already has answers here:
Append a dictionary to a dictionary [duplicate]
(7 answers)
How to index into a dictionary?
(11 answers)
Closed 2 months ago.
I encountered a program where I had to append one dictionary into another, and I was unable to do it because I could not use indexing in dictionary so I wanted to know what the possible ways are I could do it
This question already has answers here:
Python list vs. array – when to use?
(11 answers)
Array versus List<T>: When to use which?
(16 answers)
Closed 4 months ago.
I have values from 0-300, I must only project values >50 and <200,
I can do this with both List and Array but I am forced to use a Array for this task,
what is the exact difference between the two in terms on ability?
I was able to do it with both List and Array but still confused between the use of list if you can do the same thing with an Array
This question already has answers here:
Python list sort in descending order
(6 answers)
Closed 5 years ago.
This is my code:
#这是一个有关旅行的程序
place=['北京天安门','西安兵马俑','香港游乐园','日本秋叶原']
print(place)
print(sorted(place))
print(place)
place.sorted(reverse=true)
print(place)
When I run my code, something Wrong happens.
place.sorted(reverse=true)
or
sorted(place)
Using the 2nd way, how can I give (reverse=true)?
Just use sorted(place, reverse=True).
This question already has answers here:
How do I prepend to a short python list?
(7 answers)
Closed 6 years ago.
Recently I was learning python,and I want to use the function that is opposite of append() function.How can I use the function insert an element in the first position of the list.Thank you!
Prepend doesn't exist, but you can simply use the insert method:
list.insert(0, element)
This question already has answers here:
Understanding slicing
(38 answers)
Closed 9 years ago.
I am new to python. Please anybody explain the following string operations
s="abcdefghijklmnop"
print s[:6][::-1] #is it first calculating s[:6] and then operating the result with [::-1] ?
"abcdefghijklmnop"[:6][::-1]
Take first 6 characters (abcdef).
Read the result from the end to the beginning (fedcba).
There is an other better way to get this result:
"abcdefghijklmnop"[5::-1]