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創(chuàng)新互聯(lián)python教程：

寫一個 Python 程序來計算列表項的平均值。這個 Python 示例允許輸入列表項，并使用 sum 函數(shù)計算總和和平均值。

avglist = []
Number = int(input("Total Number of List Items = "))

for i in range(1, Number + 1):
    value = int(input("Please enter the %d List Item = "  %i))
    avglist.append(value)

total = sum(avglist)
avg = total / Number

print('\nThe Sum Of List Items     = ', total)
print('\nThe Average Of List Items = ', avg)

在這個 python 程序中，我們從統(tǒng)計模塊中導(dǎo)入了平均值，并從 functools 模塊中進行了縮減。這兩個 Python 函數(shù)都將計算列表項的平均值。

from statistics import mean
from functools import reduce

avglist = []
Number = int(input("Total Number of List Items = "))

for i in range(1, Number + 1):
    value = int(input("Please enter the %d List Item = "  %i))
    avglist.append(value)

total = sum(avglist)
avg1 = mean(avglist)
avg2 = reduce(lambda x, y: x + y, avglist) / Number
#avg2 = reduce(lambda x, y: x + y, avglist) /len(avglist)

print('\nThe Sum Of List Items     = ', total)
print('\nThe Average Of List Items = ', avg1)
print('\nThe Average Of List Items = ', avg2)

Total Number of List Items = 6
Please enter the 1 List Item = 19
Please enter the 2 List Item = 98
Please enter the 3 List Item = 56
Please enter the 4 List Item = 49
Please enter the 5 List Item = 77
Please enter the 6 List Item = 67

The Sum Of List Items     =  366

The Average Of List Items =  61

The Average Of List Items =  61.0

這個 python 程序使用 for 循環(huán)來迭代列表項，并計算所有列表元素的總和和平均值。

avglist = []
total = 0

Number = int(input("Total Number of List Items = "))

for i in range(1, Number + 1):
    value = int(input("Please enter the %d List Item = "  %i))
    avglist.append(value)

for i in range(Number):
    total = total + avglist[i]

avg = total / Number

print('\nThe Sum Of List Items     = ', total)
print('\nThe Average Of List Items = ', avg)

Total Number of List Items = 7
Please enter the 1 List Item = 22
Please enter the 2 List Item = 13
Please enter the 3 List Item = 43
Please enter the 4 List Item = 67
Please enter the 5 List Item = 98
Please enter the 6 List Item = 11
Please enter the 7 List Item = 26

The Sum Of List Items     =  280

The Average Of List Items =  40.0

在這個 Python 例子中，listAverage 函數(shù)接受一個列表，并返回所有列表項的總和和平均值。

def listAverage(avglist):
    total = 0
    for i in range(Number):
       total = total + avglist[i]
    avg = total / len(avglist)
    return total, avg

avglist = []

Number = int(input("Total Number of List Items = "))

for i in range(1, Number + 1):
    value = int(input("Please enter the %d List Item = "  %i))
    avglist.append(value)

total, avg = listAverage(avglist)

print('\nThe Sum Of List Items     = ', total)
print('\nThe Average Of List Items = ', avg)

Total Number of List Items = 8
Please enter the 1 List Item = 2
Please enter the 2 List Item = 9
Please enter the 3 List Item = 11
Please enter the 4 List Item = 24
Please enter the 5 List Item = 58
Please enter the 6 List Item = -11
Please enter the 7 List Item = 17
Please enter the 8 List Item = 99

The Sum Of List Items     =  209

The Average Of List Items =  26.125

當(dāng)前題目：Python程序：計算列表項平均值
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