Here is my code, I need to sum an undefined number of elements in the list. How to do this?
l = raw_input()
l = l.split(' ')
l.pop(0)
My input: 3 5 4 9
After input I delete first element via l.pop(0).
After .split(' ') my list is ['5', '4', '9'] and I ...

Asked By treng

I figured out these two methods. Is there a better one?
>>> import pandas as pd
>>> df = pd.DataFrame({'A': [5, 6, 7], 'B': [7, 8, 9]})
>>> print df.sum().sum()
42
>>> print df.values.sum()
42
Just want to make sure...

Asked By Bill

I have the following two lists:
first = [1,2,3,4,5]
second = [6,7,8,9,10]
Now I want to add the items from both of these lists into a new list.
output should be
third = [7,9,11,13,15]

Asked By Prashant Gaur

I am required to use the sum() function in order to sum the values in a list. Please note that this is DISTINCT from using a 'for' loop to add the numbers manually. I thought it would be something simple like the following, but I receive 'TypeError: 'int'...

Asked By Ro Mc

If I want to find the sum of the digits of a number, i.e. :
Input: 932
Output: 14, which is (9 + 3 + 2)
What is the fastest way of doing this?
I instinctively did:
sum(int(digit) for digit in str(number))
and I found this online:
sum(map(int, str...

Asked By SpFW

I have a list of numbers such as [1,2,3,4,5...], and I want to calculate (1+2)/2 and for the second, (2+3)/2 and the third,
(3+4)/2, and so on. How can I do that?
I would like to sum the first number with the second and divide it by 2, then sum the secon...

Asked By layo

I have the following DataFrame:
In [1]:
import pandas as pd
df = pd.DataFrame({'a': [1,2,3], 'b': [2,3,4], 'c':['dd','ee','ff'], 'd':[5,9,1]})
df
Out [1]:
a b c d
0 1 2 dd 5
1 2 3 ee 9
2 3 4 ff 1
I would like to add a column 'e' whi...

Asked By Colonel Beauvel

I have the following DataFrame:
In [1]:
import pandas as pd
df = pd.DataFrame({'a': [1,2,3], 'b': [2,3,4], 'c':['dd','ee','ff'], 'd':[5,9,1]})
df
Out [1]:
a b c d
0 1 2 dd 5
1 2 3 ee 9
2 3 4 ff 1
I would like to add a column 'e' whi...

Asked By Colonel Beauvel

Let's say I have a dictionary in which the keys map to integers like:
d = {'key1': 1,'key2': 14,'key3': 47}
Is there a syntactically minimalistic way to return the sum of the values in d—i.e. 62 in this case?

Asked By nedblorf

Are there single functions in pandas to perform the equivalents of SUMIF, which sums over a specific condition and COUNTIF, which counts values of specific conditions from Excel?
I know that there are many multiple step functions that can be used for
fo...

Asked By user3084006

Are there single functions in pandas to perform the equivalents of SUMIF, which sums over a specific condition and COUNTIF, which counts values of specific conditions from Excel?
I know that there are many multiple step functions that can be used for
fo...

Asked By user3084006

Target
I have a Pandas data frame, as shown below, with multiple columns and would like to get the total of column, MyColumn.
Data Frame - df:
print df
X MyColumn Y Z
0 A 84 13.0 ...

Asked By LearningToJava

I have a pandas DataFrame which details online activities in terms of "clicks" during an user session. There are as many as 50,000 unique users, and the dataframe has around 1.5 million samples. Obviously most users have multiple records.
The four column...

Asked By ShanZhengYang

Target
I have a Pandas data frame, as shown below, with multiple columns and would like to get the total of column, MyColumn.
Data Frame - df:
print df
X MyColumn Y Z
0 A 84 13.0 ...

Asked By LearningToJava

I am trying to use groupby, nlargest, and sum functions in Pandas together, but having trouble making it work.
State County Population
Alabama a 100
Alabama b 50
Alabama c 40
Alabama d 5
Alabama e 1
...

Asked By user7102752

If I have a dataframe similar to this one
Apples Bananas Grapes Kiwis
2 3 nan 1
1 3 7 nan
nan nan 2 3
I would like to add a column like this
Apples Bananas Grapes Kiwis Fruit To...

Asked By Tuutsrednas