Question

我正在尝试进行Python速成课程16-7，我编写了此程序，在地图上绘制了不同的国家/地区，但费用数据仅是最后一个国家/地区的价值，我花了几天的时间进行尝试解决这个问题，但似乎没有效果。我做错了什么？请帮助，我非常感谢！非常感谢你！

expenses.py

import csv

from pygal.maps.world import World

from pygal.style import LightColorizedStyle as LCS, RotateStyle as RS

from country_codes import get_country_code

#load the data into a list.
filename = 'expense.csv'
with open(filename) as f:
    reader = csv.reader(f)
    header_row = next(reader)
    header_row = next(reader)
    header_row = next(reader)
    header_row = next(reader)
    header_row = next(reader)

    cc_expenses = {}
    country_names, expenses = [], []
    for row in reader:
        country_name = row[0]
        expense = row[61]
        country_names.append(country_name)
        expenses.append(expense)
        code = get_country_code(country_name)
        if code:
            cc_expenses[code]= expense
# Everything work up to this point.

# Group the countries into 3 population levels.
cc_es_1, cc_es_2, cc_es_3 = {}, {}, {}
for cc, e in cc_expenses.items():

    e = int(float(expense))

    if e < 20:
        cc_es_1[cc] = e
    elif e < 40:
        cc_es_2[cc] = e
    else:
        cc_es_3[cc] = e

# See how many countries are in each level.
print(len(cc_es_1), len(cc_es_2), len(cc_es_3))

wm_style = RS('#336699', base_style=LCS)  

wm = World(style=wm_style)
wm.title = 'World Expense(% of GDP) in 2017, by Country'
wm.add('0-20', cc_es_1)
wm.add('20-40', cc_es_2)
wm.add('>40', cc_es_3)

wm.render_to_file('world_expenses.svg')


**countries.py**

from pygal.maps.world import COUNTRIES

for country_code in sorted(COUNTRIES.keys()):
    print(country_code, COUNTRIES[country_code])


**country_codes.py**
from pygal.maps.world import COUNTRIES

from pygal.maps.world import World

def get_country_code(country_name):
    '''Return the Pygal 2-digit country code for the given country.'''
    for code, name in COUNTRIES.items():
        if name == country_name:
            return code
    # If the country wasn't found, return None.
    return None

expense.csv https://data.worldbank.org/indicator/GC.XPN.TOTL.GD.ZS?view=chart

我按照书中的说明下载csv文件

Worldmap不显示.CSV文件中的数据

0 个答案: