Python nested list

L = [[1, 2, 3],[4, 5, 6],[7, 8, 9]]   
for list in L:
    for number in list:
        print(number, end=' ')
# Prints 1 2 3 4 5 6 7 8 9

Source: learnbyexample.org

How to make one list from nested list

>>> from collections import Iterable
def flatten(lis):
     for item in lis:
         if isinstance(item, Iterable) and not isinstance(item, str):
             for x in flatten(item):
                 yield x
         else:        
             yield item

>>> lis = [1,[2,2,2],4]
>>> list(flatten(lis))
[1, 2, 2, 2, 4]
>>> list(flatten([[1, 2, 3], [4, 5, 6], [7, 8, 9]]))
[1, 2, 3, 4, 5, 6, 7, 8, 9]

Source: stackoverflow.com

Nested list in pthon

n=int(input())
res=[]
grade=[]
for i in range(n):
    name=input()
    mark=float(input())
    res.append([name,mark])
    grade.append(mark)   #calculation 2nd lowest
#print(res)   
#print(grade)
grade=sorted(set(grade))  #sorted unique
#print(grade)
m=grade[1]
#print(m)
name=[]
for val in res:
    if m==val[1]:
        name.append(val[0])
#print(name)   #unsorted     
name.sort()
#print(name)   #sorted
for nm in name:
    print(nm)

Source: letstacle.com

Similar codes

9 votes173 views2 answers
Install python linux ubuntu
Python
2 votes190 views2 answers
Null=true django
Python
9 votes175 views1 answer
Can only concatenate str (not "int") to str
Python
3 votes190 views4 answers
Python list append
Python
3 votes181 views1 answer
Matplotlib y axis log scale
Python
7 votes162 views1 answer
Program to find even numbers in python
Python
-3 votes195 views2 answers
Round robin
Python
1 vote199 views3 answers
Dataframe groupby to dictionary
Python
36 votes168 views4 answers
Drop multiple columns pandas
Python
12 votes177 views1 answer
How to create an env to use in vs code using anaconda
Python