Python csv模块使用方法代码实例

这篇文章主要介绍了python csv模块使用方法代码实例,文中通过示例代码介绍的非常详细，对大家的学习或者工作具有一定的参考学习价值,需要的朋友可以参考下

import csv
def openscv(filename):
  with open("renting.csv",'r',encoding = 'utf_8_sig') as f:
    f_csv = csv.reader(f)
    for row in f_csv:
      print(row)
def test1():
  headers = ['id','name','age','height']
  #表格内容
  rows = [('1','lili',18,165),('2','jack',20,170),('3','marry',21,168)]
  with open('test1.csv','w',encoding='utf_8_sig') as csvfile:
    spamwriter = csv.writer(csvfile)
    spamwriter.writerow(headers)
    spamwriter.writerows(rows)
def writedict():
  with open('test2.csv','w') as csvfile:
    #创建字段名
    fieldnames = ['first_name','last_time']
    #创建字段写入对象
    writer = csv.dictwriter(csvfile,fieldnames=fieldnames)
    writer.writeheader()
    #写入表格内容
    writer.writerow({'first_name':'baked','last_time':'beans'})
    writer.writerow({'first_name': 'baked', 'last_time': 'beans'})
    writer.writerow({'first_name': 'baked', 'last_time': 'beans'})
def readdict():
  with open('test2.csv','r') as csvfile:
    #读取文件
    reader = csv.dictreader(csvfile)
    #遍历输入指定字段的内容
    for row in reader:
      print(row['first_name'],row['last_time'])
if __name__ == '__main__':
  test1()
  writedict()
  readdict()

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