LearnPython/python_csv.py

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2017-05-19 15:02:53 +08:00
# _*_ coding: utf-8 _*_
"""
python_csv.py by xianhu
"""
import csv
import datetime
# 数据
data = [
[1, "a,bc", 19.353, datetime.datetime(2001, 3, 17)],
[2, "ei,f", 13.287, datetime.datetime(2011, 4, 27)],
[3, "q\"ij", 15.852, datetime.datetime(2003, 7, 14)],
[4, "zh'n", 11.937, datetime.datetime(2012, 1, 9)],
[5, "i\'op", 12.057, datetime.datetime(2009, 5, 18)],
]
# 写文件
with open("test.csv", "w") as file:
writer = csv.writer(file, dialect="excel")
# writer.writerows(data)
for item in data:
writer.writerow(item)
# 读文件
with open("test.csv", "r") as file:
reader = csv.reader(file, dialect="excel")
for item in reader:
print(item)
# 读文件
with open("test.csv", "r") as file:
reader = csv.DictReader(file, fieldnames=["id", "name", "float", "datetime"], dialect="excel")
data = [item for item in reader]
print(data)
# 写文件
with open("test.csv", "w") as file:
writer = csv.DictWriter(file, fieldnames=["id", "name", "float", "datetime"], dialect="excel")
writer.writeheader()
for item in data:
writer.writerow(item)