Python base data types are converted to each other

strings, numbers, lists, meta-ancestors, dictionaries convert each other

What is the conversion between 1 Int and STR, and what is the result of the transformation? Is there a condition?

     #str (int) can be converted to str  the process has no conditions      #字符串转化为数字必须全部由数字组成      How can I convert between 2  Int  and  bool  by Int (str type), and what is the result of the conversion? Is there a condition?     # int conversion to bool no condition, except 0 conversion to false other numbers are converted to True  bool (number of int)       #int (False) = 0; int (True)  = 1 3 str  and  bool  conversions, What is the result of the conversion? There are no conditions for?     #str   conversion to bool without conditions, NULL string conversion to a Boolean value of false    F non-null to True    bool (SRR type)      #str (true) = ' true '    str (False) = ' flase ' str  and  list  can I convert? How to convert?     #  can  str>>list  1.   2.list (str string) with split cut       #可以  list>>str  1. Using join+  Iteration    2. str (list listing)    example

# ret15 = ' jinxin Alex Wusir '
# ret16 = Ret15.split ()
# Print (ret16)
[' Jinxin ', ' Alex ', ' Wusir ']

# ret15 = ' Jinxin,alex,wusir '      split. (', ') comma string format to make a list of the entire string
# ret16 = Ret15.split (', ')
# Print (ret16)
[' Jinxin ', ' Alex ', ' Wusir ']

# ret15 = ' title Tle tlie '
# ret16 = ret15.split (' t ')
# Print (ret16)
[', ' I ', ' le ', ' le ', ' lie ']    What splits that element is deleted as a split point.

Turn the list into a string     "' Out is the string

L1 = [' jinxin ', ' Alex ', ' Wusir ']
Li = ". Join (L1)
Print (LI)

Jinxin Alex Wusir

# to False
#0, "", {},[], (), set ()

# # # #字符串与列表互转 # string to list Listl = ' ab_c ' Print (List (' Ab_c '), type (' Ab_c ')) #列表转字符串使用 joinl1 = [' 1 ', ' 2 ', ' 3 ']str = '. Join (l 1) Notice that the string between the strings is empty, so come out is 123print (Str,type (str)) 123li = [' Alex ', ' rain ']temp = '. Join (LI) print (Temp,type (temp)) #元组与列表互转 # tuple to list plus Listtu = (in a.) L = List (TU) print (L,type (l)) l= [1,2,3]# # # list to tuple plus tupleli = [4,5,6]print (Tuple (LI), type (tuple ( LI)))

Python base data types are converted to each other