写一个 Python 程序，使用 For 循环、While 循环和函数，用一个实际例子来求列表中偶数和奇数的和。
Python 程序使用 For 循环查找列表中偶数和奇数的和
在这个 python 程序中，我们使用 For 循环来迭代给定列表中的每个元素。在 Python 循环中，我们使用 If 语句来检查和查找偶数和奇数的和。
# Python Program to find Sum of Even and Odd Numbers in a List
NumList = []
Even_Sum = 0
Odd_Sum = 0
Number = int(input("Please enter the Total Number of List Elements: "))
for i in range(1, Number + 1):
value = int(input("Please enter the Value of %d Element : " %i))
NumList.append(value)
for j in range(Number):
if(NumList[j] % 2 == 0):
Even_Sum = Even_Sum + NumList[j]
else:
Odd_Sum = Odd_Sum + NumList[j]
print("nThe Sum of Even Numbers in this List = ", Even_Sum)
print("The Sum of Odd Numbers in this List = ", Odd_Sum)在这个 python 程序中，为了在一个列表中找到偶数和奇数的和，用户输入了项= [2，3，4，5]，偶数 和= 0，奇数 和= 0。
对于循环–第一次迭代:对于范围(0，4) 中的 0，条件为真。所以，进入 If 语句
if(NumList[0]% 2 = = 0)= > if(2% 2 = = 0)–条件为真 偶数 Sum =偶数 Sum+NumList[0]=>0+2 = 2
第二次迭代:对于范围(0，4)中的 1–条件为真 如果(NumList[1] % 2 == 0) = >如果(3% 2 = = 0)–条件为假，则进入 Else 块。 奇 和=奇 和+ NumList[1] = > 0 + 3 = 3
第三次迭代:对于范围(0，4)中的 2–条件为真 如果(NumList[2] % 2 == 0) = >如果(4% 2 = = 0)–条件为真 偶数 _Sum = 2 + 4 = 6
第四次迭代:对于范围(0，4)中的 3–条件为真 如果(5% 2 = = 0)–条件为假，则进入否则块。 奇数 _ 总和= 3 + 5 = 8
第五次迭代:对于范围(4)中的 4–条件为假。因此， Python 退出 For 循环
Python 程序使用 While 循环查找列表中偶数和奇数的和
这个计算偶数和奇数之和的 Python 程序同上。我们刚刚将 For Loop 替换为 While loop 。
# Python Program to find Sum of Even and Odd Numbers in a List
NumList = []
Even_Sum = 0
Odd_Sum = 0
j = 0
Number = int(input("Please enter the Total Number of List Elements: "))
for i in range(1, Number + 1):
value = int(input("Please enter the Value of %d Element : " %i))
NumList.append(value)
while(j < Number):
if(NumList[j] % 2 == 0):
Even_Sum = Even_Sum + NumList[j]
else:
Odd_Sum = Odd_Sum + NumList[j]
j = j+ 1
print("nThe Sum of Even Numbers in this List = ", Even_Sum)
print("The Sum of Odd Numbers in this List = ", Odd_Sum)使用 while 循环输出的 Python 列表中偶数和奇数的总和
Please enter the Total Number of List Elements: 5
Please enter the Value of 1 Element : 22
Please enter the Value of 2 Element : 33
Please enter the Value of 3 Element : 44
Please enter the Value of 4 Element : 55
Please enter the Value of 5 Element : 99
The Sum of Even Numbers in this List = 66
The Sum of Odd Numbers in this List = 187用函数计算列表中偶数和奇数之和的 Python 程序
这个 Python 奇数和偶数的和列表程序与第一个示例相同。但是，我们使用函数来分离逻辑
# Python Program to find Sum of Even and Odd Numbers in a List
def even_sum(NumList):
Even_Sum = 0
for j in range(Number):
if(NumList[j] % 2 == 0):
Even_Sum = Even_Sum + NumList[j]
return Even_Sum
def odd_sum(NumList):
Odd_Sum = 0
for j in range(Number):
if(NumList[j] % 2 != 0):
Odd_Sum = Odd_Sum + NumList[j]
return Odd_Sum
NumList = []
Number = int(input("Please enter the Total Number of List Elements: "))
for i in range(1, Number + 1):
value = int(input("Please enter the Value of %d Element : " %i))
NumList.append(value)
Even_Sum = even_sum(NumList)
Odd_Sum = odd_sum(NumList)
print("nThe Sum of Even Numbers in this List = ", Even_Sum)
print("The Sum of Odd Numbers in this List = ", Odd_Sum)使用函数输出的列表中偶数和奇数的总和
Please enter the Total Number of List Elements: 7
Please enter the Value of 1 Element : 12
Please enter the Value of 2 Element : 9
Please enter the Value of 3 Element : 21
Please enter the Value of 4 Element : 13
Please enter the Value of 5 Element : 87
Please enter the Value of 6 Element : 14
Please enter the Value of 7 Element : 66
The Sum of Even Numbers in this List = 92
The Sum of Odd Numbers in this List = 130