这里有一个简单的解决方案，对您的查询进行了解释。

 a=['1','2','3','4','5'] #The integer represented as a string in this list
 b=[] #Fresh list
 for i in a: #Declaring variable (i) as an item in the list (a).
     b.append(int(i)) #Look below for explanation
 print(b)

这里，append()用于将项(即本程序中字符串(i)的整数版本)添加到列表(b)的末尾。

注意:int()是一个帮助将字符串形式的整数转换回整数形式的函数。

输出控制台:

[1, 2, 3, 4, 5]

因此，只有当给定的字符串完全由数字组成时，我们才能将列表中的字符串项转换为整数，否则将产生错误。

考虑到:

xs = ['1', '2', '3']

使用map then list获取一个整数列表:

list(map(int, xs))

在Python 2中，list是不必要的，因为map返回一个列表:

map(int, xs)

在列表xs上使用一个列表推导式:

[int(x) for x in xs]

e.g.

>>> xs = ["1", "2", "3"]
>>> [int(x) for x in xs]
[1, 2, 3]

我还想添加Python |将列表中的所有字符串转换为整数

方法1:朴素法

# Python3 code to demonstrate 
# converting list of strings to int 
# using naive method 

# initializing list 
test_list = ['1', '4', '3', '6', '7'] 

# Printing original list 
print ("Original list is : " + str(test_list)) 

# using naive method to 
# perform conversion 
for i in range(0, len(test_list)): 
    test_list[i] = int(test_list[i]) 
    

# Printing modified list 
print ("Modified list is : " + str(test_list)) 

输出:

Original list is : ['1', '4', '3', '6', '7']
Modified list is : [1, 4, 3, 6, 7]

方法#2:使用列表理解

# Python3 code to demonstrate 
# converting list of strings to int 
# using list comprehension 

# initializing list 
test_list = ['1', '4', '3', '6', '7'] 

# Printing original list 
print ("Original list is : " + str(test_list)) 

# using list comprehension to 
# perform conversion 
test_list = [int(i) for i in test_list] 
    

# Printing modified list 
print ("Modified list is : " + str(test_list)) 

输出:

Original list is : ['1', '4', '3', '6', '7']
Modified list is : [1, 4, 3, 6, 7]

方法#3:使用map()

# Python3 code to demonstrate 
# converting list of strings to int 
# using map() 

# initializing list 
test_list = ['1', '4', '3', '6', '7'] 

# Printing original list 
print ("Original list is : " + str(test_list)) 

# using map() to 
# perform conversion 
test_list = list(map(int, test_list)) 
    

# Printing modified list 
print ("Modified list is : " + str(test_list)) 

输出:

Original list is : ['1', '4', '3', '6', '7']
Modified list is : [1, 4, 3, 6, 7]

使用python中的循环简写，可以轻松地将字符串列表项转换为int项

假设你有一个字符串result = ['1'，'2'，'3']

就做,

result = [int(item) for item in result]
print(result)

它会给你输出

[1,2,3]

比列表理解更扩展一点，但同样有用:

def str_list_to_int_list(str_list):
    n = 0
    while n < len(str_list):
        str_list[n] = int(str_list[n])
        n += 1
    return(str_list)

e.g.

>>> results = ["1", "2", "3"]
>>> str_list_to_int_list(results)
[1, 2, 3]

另外:

def str_list_to_int_list(str_list):
    int_list = [int(n) for n in str_list]
    return int_list