Interconversion between python data types

Table of contents

1. Convert tuples to lists

(1) Syntax: list(tuple)

(2) Examples

①Simple usage example

②Use in combination with for function, if function, and split function

2. Convert the list to a tuple

(1) Syntax: tuple(list)

(2) Examples

3. Convert numbers to strings

(1) Syntax: string(number)

(2) Examples

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1. Convert tuples to lists

(1) Syntax: list(tuple)

(2) Examples

①Simple usage example

#list
tup1 = (1,4,6,7)
ls1 = list(tup1)
print('转换的列表ls1为：',ls1)


tup2 = ('hello','world','funny','window')
ls2 = list(tup2)
print('转换的列表ls2为：',ls2)

The output is:

转换的列表ls1为： [1, 4, 6, 7]
转换的列表ls2为： ['hello', 'world', 'funny', 'window']

②Use in combination with for function, if function, and split function

ls = {('hello','home','funny','windows','water'), 'come on friends'}
for element in ls:
    if type(element) == tuple:
        ls1 = list(element)
        print('转换的列表ls为：',ls1)
    elif type(element) == str:
        ls2 = element.split()
        print('转换的列表ls为：',ls2)
    else:
        pass

Output result:

转换的列表ls为： ['hello', 'home', 'funny', 'windows', 'water']
转换的列表ls为： ['come', 'on', 'friends']

illustrate:

① Convert a string to a list type: list = string.split()

②The type function is used to determine what data type the object is.

2. Convert the list to a tuple

(1) Syntax: tuple(list)

(2) Examples

#tuple
#简单的用法实例
ls1  = [1,3,8,6,12,7]
tup1 = tuple(ls1)
print('转换的元组tup1为：',tup1)

ls2 = ['hello','world','funny','window']
tup2 = tuple(ls2)
print('转换的元组tup2为：',tup2)


#与if函数结合使用
ls3 = ['fine','happy','creative']
if type(ls3) == list:
    tup3 = tuple(ls3)
    print('转换的元组tup3为：',tup3)
else:
    pass

The output is:

转换的元组tup1为： (1, 3, 8, 6, 12, 7)
转换的元组tup2为： ('hello', 'world', 'funny', 'window')
转换的元组tup3为： ('fine', 'happy', 'creative')

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3. Convert numbers to strings

(1) Syntax: string(number)

(2) Examples

#string
#简单的用法实例
num1 = 543563
string1 = str(num1)
print('转换的字符串string1为：',string1)
print('转换的字符串string1类型为：',type(string1))

num2 = 100086
string2 = str(num2)
print('转换的字符串string2为：',string2)
print('转换的字符串string2类型为：',type(string2))

#与if函数结合使用
ls = [56340,5983.25,'hello',10086,'happy']
n = 2
for i in ls :
    if type(i) == int or type(i) == float:
        n+=1
        string3 = str(i)
        print('转换的字符串string%d为：%s'%(n,string3))
        print('转换的字符串string%d类型为：%s'%(n,type(string3)))
    else:
        pass

Output result:

转换的字符串string1为： 543563
转换的字符串string1类型为： <class 'str'>
转换的字符串string2为： 100086
转换的字符串string2类型为： <class 'str'>
转换的字符串string3为：56340
转换的字符串string3类型为：<class 'str'>
转换的字符串string4为：5983.25
转换的字符串string4类型为：<class 'str'>
转换的字符串string5为：10086
转换的字符串string5类型为：<class 'str'>

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reference article

For details, please refer to the usage example of the split function: How to split a string in python - the usage and examples of the split function

 For specific usage of if judgment statement, please refer to: Usage and examples of python's if conditional statement

For the usage of the specific for function, please refer to:

The usage and examples of python's for loop statement - Programmer Sought