python整数转换字符串

Given a string with digits and we have to convert the string to its equivalent list of the integers in Python.

给定一个带有数字的字符串，我们必须将该字符串转换为Python中与之等效的整数列表。

Example:

例：

    Input:
    str1 = "12345"
    Output:
    int_list = [1, 2, 3, 4, 5]

    Input:
    str1 = "12345ABCD"
    Output:
    ValueError

Note: The string must contain only digits between 0 to 9, if there is any character except digits, the program will through a ValueError.

注意：该字符串只能包含0到9之间的数字，如果除数字之外还有任何其他字符，则程序将通过ValueError进行操作 。

如何将字符(仅数字)转换为整数？ (How to convert character (only digit) to integer?)

To convert a character (that is digit only like: ‘0’, ‘1’, ‘2’, ‘3’, ‘4’, ‘5’, ‘6’, ‘7’, ‘8’, ‘9’) to integer, we use int() function – which is a library function in Python. int() returns integer value equivalent to given character i.e. digit in character form.

转换字符(仅是数字，例如： “ 0”，“ 1”，“ 2”，“ 3”，“ 4”，“ 5”，“ 6”，“ 7”，“ 8”，“ 9” )转换为整数，我们使用int()函数-这是Python中的库函数。 int()返回等于给定字符的整数值，即字符形式的数字。

print (int('0'))
print (int('1'))
print (int('2'))
print (int('3'))
print (int('4'))
print (int('5'))
print (int('6'))
print (int('7'))
print (int('8'))
print (int('9'))

Output

输出量

0
1
2
3
4
5
6
7
8
9

Python程序将字符串转换为整数列表 (Python program to convert a string to integers list)

Here, we have a string “12345” and we are converting it to integers list [1, 2, 3, 4, 5].

在这里，我们有一个字符串“ 12345” ，并将其转换为整数列表[1、2、3、4、5] 。

# program to convert string to integer list
# language: python3

# declare a list
str1 = "12345"

# list variable to integeres
int_list =[]

# converting characters to integers
for ch in str1:
    int_list.append(int(ch))

# printing the str_list and int_list    
print ("str1: ", str1)
print ("int_list: ", int_list)

Output

输出量

str1:  12345
int_list:  [1, 2, 3, 4, 5]

ValueError (ValueError)

If there is any character except the digits, there will be an error “ValueError: invalid literal for int() with base 10”.

如果除数字外没有其他字符，将出现错误“ ValueError：int()的基数为10的无效文字” 。

Program with Error:

出现错误的程序：

# program to convert string to integer list
# language: python3

# declare a list
str1 = "12345ABCD"

# list variable to integeres
int_list =[]

# converting characters to integers
for ch in str1:
    int_list.append(int(ch))

# printing the str_list and int_list    
print ("str1: ", str1)
print ("int_list: ", int_list)

Output

输出量

Traceback (most recent call last):
  File "/home/main.py", line 12, in 
   
    
    int_list.append(int(ch))
ValueError: invalid literal for int() with base 10: 'A'

   

翻译自: https://www.includehelp.com/python/convert-a-string-to-integers-list.aspx

python整数转换字符串