Python中的字典無法從csv文件正常工作

Question

我有一個csv文件，其中包含有關我所在地區的不同公司的wifi信息。 他們從中獲取wifi的電信公司名稱位於一欄中。 我需要在python中創建一個字典，並以telco名稱作為鍵，並將其在列中出現的次數作為值。

我正在使用.read().splitlines()方法讀取csv ，但是由於某些單元格包含逗號，因此實際上很難拆分數據。

碼：

    def printer(csvreadsplit):  #prints each line of a csv that has been read and split
    for line in csvreadsplit:
        print line


file_new = open("/Users/marknovice/Downloads/Updated_Cafe.csv", "r")

lines1 = file_new.read().splitlines()

printer(lines1)

writer1 = open("Cafe_Data.csv", "w+")

def telcoappeareances(filecsv):
    telconumber = {}
    for line in filecsv:
        if "Singtel" or "SingTel" in line:
            if "Singtel" or "SingTel" not in telconumber.keys():
                telconumber["SingTel"] = 1
            else:
                telconumber["SingTel"] += 1
        if "Starhub" or "StarHub" in line:
            if "Starhub" or "StarHub" not in telconumber.keys():
                telconumber["StarHub"] = 1
            else:
                telconumber["StarHub"] += 1
        if "Viewqwest" or "ViewQwest" in line:
            if "Viewqwest" or "ViewQwest" not in telconumber.keys():
                telconumber["ViewQwest"] = 1
            else:
                telconumber["ViewQwest"] += 1
        if "M1" in line:
            if ["M1"] not in telconumber.keys():
                telconumber["M1"] = 1
            else:
                telconumber["M1"] += 1
        if "MyRepublic" or "Myrepublic" in line:
            if "MyRepublic" or "Myrepublic" not in telconumber.keys():
                telconumber["MyRepublic"] = 1
            else:
                telconumber["MyRepublic"] += 1
    print telconumber.keys()
    print telconumber.values()

telcoappeareances(lines1)

結果：

['MyRepublic', 'StarHub', 'ViewQwest', 'M1', 'SingTel']
[1, 1, 1, 1, 1]

Answer 1

請改用csv模塊，這樣便可以將逗號聲明為定界符：

import csv

with open("/Users/marknovice/Downloads/Updated_Cafe.csv", "rb") as csvfile:
    reader = csv.reader(csvfile, delimiter=str(u','), quotechar=str(u'"'))

然后，您可以遍歷讀者以獲取逗號分隔的值