Python - Quick Note

• Counters

      

• Loop and remove(/insert) at same time for list (list移除不正確)

       

           ref. doc https://docs.python.org/3/tutorial/controlflow.html 4.2

• int to str  → str(<數字>)

          

• str to list → list("<文字>")

         

• list to str →'', join(<List>)

     

• reverse list → <List>.reverse()

     

• reverse string [<begin>:<end>:<step>]

      

• find max value for list→ max(<List>)

     

• 確認List是否為空 → if not <List>

      

• print不換行 → for 2.7 print("name"),   for 3.5 end=''

• 不要空格workaround → sys.stdout.write('')

• print int+str →需先將int轉換為str

      

• print list in range → print A[3] to A[6] (not include A[7])

     

• range with step

     

• map, do something to all list member

     

• operation to 2 list member in same place

       

• zfill (only support str)

     

• Binary to Decimal to Hexadecimal

    

• lambda - simple function display

    

• filter

    

• reduce

   

• Two list to dictionary

         Method 1:
     
         Method 2: