我在從下面的 CSV 文件中獲取行值時遇到了一些問題CSVminzoom, maxzoom0,55,1010,18我的代碼：i = 0for line in open("C:/Marine/lookup/distinct_lookup_scales.csv"): i = i + 1 if (i > 1): #Skip header print("Line: " + line) #csv_row = line.split(',') minzoom = str(line[0]) maxzoom = str(line[2]) print("Minzoom:" + minzoom) print("Maxzoom:" + maxzoom) readShpFile(minzoom, maxzoom)minzoom和maxzoom 的返回值是0 55 11 ,我曾使用行拆分但又恢復嘗試從行中獲取項目不確定這是否是最好的方法
2 回答
弒天下
TA貢獻1818條經驗 獲得超8個贊
這不是你應該如何閱讀 csv 文件。查看csv 模塊文檔。
一個例子：
import csv
with open('C:/Marine/lookup/distinct_lookup_scales.csv', 'r') as csvfile:
csvreader = csv.reader(csvfile)
csvreader.next() #skip header
for row in csvreader:
minzoom = int(row[0])
maxzoom = int(row[1])
print('minzoom : {}'.format(minzoom))
print('maxzoom : {}'.format(maxzoom))
您還可以使用 DictReader，它將使用您的標題行來生成字典。
import csv
with open('C:/Marine/lookup/distinct_lookup_scales.csv', 'r') as csvfile:
csvreader = csv.DictReader(csvfile)
for row in csvreader:
minzoom = int(row['minzoom'])
maxzoom = int(row['maxzoom'])
print('minzoom : {}'.format(minzoom))
print('maxzoom : {}'.format(maxzoom))
www說
TA貢獻1775條經驗 獲得超8個贊
你可以試試 numpy.genfromtxt，比如：
import numpy as np
data = np.genfromtxt("C:/Marine/lookup/distinct_lookup_scales.csv", delimiter = ",",
skip_header = 1)
minzooms = data[:,0]
maxzooms = data[:,1]
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