python csv实时一条一条插入且表头不重复问题_python_

import csv with open("111.csv","a",encoding='utf-8',newline="") as f: k = csv.writer(f, dialect="excel") with open("111.csv", "r", encoding='utf-8', newline="") as f: reader = csv.reader(f) if not [row for row in reader]: k.writerow(["标题", "链接", "喜欢"]) k.writerow(list) else: k.writerow(list)

all_datas = [[1,2],[2,3],[1,2],[4,5]] for list1 in all_datas: with open(r"ablchange1.csv", 'a+', encoding='utf-8-sig', newline="") as f: k = csv.writer(f, dialect="excel") with open("ablchange1.csv", "r", encoding='utf-8-sig', newline="") as f: reader = csv.reader(f) if not [row for row in reader]: k.writerow(["a","b"]) k.writerow(list1) else: k.writerow(list1)

with open("111.txt","a") as f:     for i in range(100000):         f.write(str(i)+"\n")         if i==9000:             break

import csv with open('names.csv', 'w') as csvfile:     fieldnames = ['first_name', 'last_name']     writer = csv.DictWriter(csvfile, fieldnames=fieldnames)     writer.writeheader()     writer.writerow({'first_name': 'Baked', 'last_name': 'Beans'})     writer.writerow({'first_name': 'Lovely', 'last_name': 'Spam'})     writer.writerow({'first_name': 'Wonderful', 'last_name': 'Spam'})

    with open('specific.csv', 'a', newline="") as csvfile:         fieldnames = ['ebayno', "pov", "mpn", "ipn", "opn"]         writer = csv.DictWriter(csvfile, fieldnames=fieldnames)         writer.writeheader()

    file = open("aces_less.csv","w" , newline="")     writer = csv.DictWriter(file, fieldnames=["asin","state"])     writer.writeheader()     for i in range(len(qs)):         print(qs[i])         state = getDataById(qs[i])         print("状态 = " + state + "\n")         writer.writerow({"asin":qs[i], "state": state})