def
writerCsv2
()
:
f = open(
"data.csv"
,
"w"
)
writer = csv.DictWriter(f, [
"name"
,
"age"
])
for
i
in
range(
100
):
dct = {
"name"
:i+
1
,
"age"
: i+
2
}
writer.writerow(dct)
f.close()
print(
"写入成功！"
)
writerCsv2()
要读取的文件
# MontyPythonAlbums.csv
Name,Year
Monty Python's Flying Circus,1970
Another Monty Python Record,1971
Monty Python's Previous Record,1972
# 按行读取列表
def readerCsv1():
# 读取网络文件
# url = "http://www.pythonscraping.com/files/MontyPythonAlbums.csv"
# data = urlopen(url).read()
# 读取本地文件
data = open("MontyPythonAlbums.csv", "r").read().decode('utf-8')
print type(data)
data_file = StringIO(data) # 字符串转为io对象
csv_reader = csv.reader(data_file)
for row in csv_reader:
print(row)
['Name', 'Year']
["Monty Python's Flying Circus", '1970']
# readerCsv1()
# 按行读取列表
def readerCsv2():
f = open("MontyPythonAlbums.csv", "r")
csv_reader = csv.reader(f)
for row in csv_reader:
print(row)
['Name', 'Year']
["Monty Python's Flying Circus", '1970']
f.close()
# readerCsv2()
# 按行读取字典，第一行为key
def readerCsv3():
f = open("MontyPythonAlbums.csv", "r")
csv_reader = csv.DictReader(f)
for row in csv_reader:
print(row)
# {'Name': "Monty Python's Flying Circus", 'Year': '1970'}
f.close()
# readerCsv3()
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