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Yes Cyber solution is best.

For beginners

  1. Read file in Read mode.
  2. Iterate lines by readlines() or readline()
  3. Use split(",") method to split line by '
  4. Use float to convert string value to float. OR We can use eval() also.
  5. Use list append() method to append tuple to list.
  6. Use try except to prevent code from break.
My text file is:

-34.968398,-6.487265
-34.969448,-6.488250
-34.967364,-6.492370
-34.965735,-6.582322


Code:

p = "/home/vivek/Desktop/test.txt"
result = []
with open(p, "rb") as fp:
    for i in fp.readlines():
        tmp = i.split(",")
        try:
            result.append((float(tmp[0]), float(tmp[1])))
            #result.append((eval(tmp[0]), eval(tmp[1])))
        except:pass

print result


Output:

$ python test.py 
[(-34.968398, -6.487265), (-34.969448, -6.48825), (-34.967364, -6.49237), (-34.965735, -6.582322)]

Read file as a list of tuples, 파일읽어서 튜플 만들기

 

 

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sorted, 문자열 길이로 정렬, 한글 정렬

the_list.sort() # sorts normally by alphabetical order
the_list.sort(key=len, reverse=True) # sorts by descending length


the_list.sort(key=lambda item: (-len(item), item))




#########################################


n = ['aaa', 'bbb', 'ccc', 'dddd', 'dddl', 'yyyyy']

for i in reversed(sorted(n, key=len)):
       print i
       
       
for i in sorted(n, key=len, reverse=True):
        print i

 

-Sort your list by alpha order, then by length.

See the following exmple:

>>> coursesList = ["chemistry","physics","mathematics","art"]
>>> sorted(coursesList,key=len)
['art', 'physics', 'chemistry', 'mathematics']
>>> coursesList.append("mopsosa")
>>> sorted(coursesList,key=len)
['art', 'physics', 'mopsosa', 'chemistry', 'mathematics']
>>> coursesList.sort()
>>> sorted(coursesList,key=len)
['art', 'mopsosa', 'physics', 'chemistry', 'mathematics']
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 jQuery - append, prepend, after, before

 

before : 선택한 요소의 앞에 내용 삽입

after : 선택한 요소의 뒤에 내용 삽입 

prepend : 선택한요소의 자식요소 앞에 내용삽입

append : 선택한요소의 자식요소 뒤에 내용삽입

after() Inserts content after selected elements
before() Inserts content before selected elements
append() Inserts content at the end of selected elements
prepend() Inserts content at the beginning of selected elements

 

 

.

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