从.txt文件中读取统计信息并输出

Question

我应该从.txt文件中获取某些信息并输出。这是我需要的信息：

• 人口最多的州
• 人口最少的州
• 平均州人口
• 德克萨斯州人口

DATA看起来像：

Alabama
AL
4802982
Alaska
AK
721523
Arizona
AZ
6412700
Arkansas
AR
2926229
California
CA
37341989

这是我的代码，它实际上不做任何我需要它做的事情：

^{pr2}$

我所能做的就是读州名，abv，并将人口转换成int。我不需要它做任何事情，但是我不确定如何完成任务所要求的。任何提示都将不胜感激！在过去的几个小时里，我一直在尝试一些事情，但没有成功。在

更新：

这是我更新的代码，但是我收到以下错误：

Traceback (most recent call last):
  File "main.py", line 13, in <module>
    if population > max_population:
TypeError: unorderable types: str() > int()

代码：

with open('StateCensus2010.txt', 'r') as census_file:
    while True:
        try:
            state_name = census_file.readline()
            state_abv = census_file.readline()
            population = int(census_file.readline())
        except IOError:
            break

        # data processing here
        max_population = 0
        for population in census_file:
          if population > max_population:
            max_population = population

        print(max_population)

Answer 1

因为数据的顺序是一致的：Statename、State Abv、Population。所以你只需要读一次这几行，然后显示这三条信息。下面是示例代码。在

average = 0.0
total = 0.0
state_min = 999999999999
state_max = 0
statename_min = ''
statename_max = ''
texas_population = 0
with open('StateCensus2010.txt','r') as file:
    # split new line, '\n' here means newline

    data = file.read().split('\n')

    # get the length of the data by using len() method
    # there are 50 states in the text file
    # each states have 3 information stored,
    # state name, state abreviation, population
    # that's why length of data which is 150/3 = 50 states
    state_total = len(data)/3 


    # this count is used as an index for the list 
    count = 0
    for i in range(int(state_total)):

        statename = data[count]
        state_abv = data[count+1]
        population = int(data[count+2])

        print('Statename : ',statename)
        print('State Abv : ',state_abv)
        print('Population: ',population)
        print()

        # sum all states population
        total += population

        if population > state_max:
            state_max = population
            statename_max = statename

        if population < state_min:
            state_min = population
            statename_min = statename

        if statename == 'Texas':
            texas_population = population


        # add 3 because we want to jump to next state
        # for example the first three lines is Alabama info
        # the next three lines is Alaska info and so on
        count += 3


    # divide the total population with number of states 
    average = total/state_total
    print(str(average))

    print('Lowest population state :', statename_min)
    print('Highest population state :', statename_max)
    print('Texas population :', texas_population)