我想从标准输入读取一个CSV文件并处理每一行.我的CSV输出代码逐个写入行,但我的读者在迭代行之前等待流终止.这是csv模块的限制吗？难道我做错了什么？
我的读者代码:
import csv
import sys
import time
reader = csv.reader(sys.stdin)
for row in reader:
print "Read: (%s) %r" % (time.time(), row)
我的作家代码:
import csv
import sys
import time
writer = csv.writer(sys.stdout)
for i in range(8):
writer.writerow(["R%d" % i, "$" * (i+1)])
sys.stdout.flush()
time.sleep(0.5)
产量python test_writer.py | python test_reader.py:
Read: (1309597426.3) ['R0', '$']
Read: (1309597426.3) ['R1', '$$']
Read: (1309597426.3) ['R2', '$$$']
Read: (1309597426.3) ['R3', '$$$$']
Read: (1309597426.3) ['R4', '$$$$$']
Read: (1309597426.3) ['R5', '$$$$$$']
Read: (1309597426.3) ['R6', …