#打印前100行
import csv
#读取csv文件
with open("C:\\Users\\****\\Desktop\\pythonp\\chengxu\\shuju\\yellow_tripdata_2010-01.csv", "r", encoding='UTF-8') as f:
reader = csv.reader(f)
i=1
for row in reader:
if i<100:
#print(row[0][1])
print(row)
i=i+1
#print(reader[1])
#数据分段 提取n行保存到新的文件 文件和python在同一目录
import csv
fnew = open('数据的前100000000行1.csv','w',encoding='utf-8')
# 2. 基于文件对象构建 csv写入对象
csv_writer = csv.writer(fnew)
#读取csv文件
with open("C:\\Users\\****\\Desktop\\pythonp\\chengxu\\shuju\\yellow_tripdata_2010-01.csv", "r", encoding='UTF-8') as f:
reader = csv.reader(f)
i=1
for row in reader:
if i<100000000:
#print(row[0][1])
#print(row)
csv_writer.writerow(row)
i=i+1
#print(i)
fnew.close()
python 读取csv读取部分csv文件到新的文件
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转载自blog.csdn.net/ResumeProject/article/details/114194578
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