[英]Apply function to every line in csv file
我在这里有一个来自 Vasilis G. 的回答的函数:
from datetime import datetime def getTotal(line): dates = list(datetime.strptime(elem, '%Y-%m-%d') for elem in line.split(', ')) total = 0 for i in range(0, len(dates), 2): delta = dates[i+1] - dates[i] if delta.days > 90: total += 2 else: total += 1 return total
然后我使用了:
with open('dataset.csv','r') as csvfile: # use with to auto-close file
for row in csvfile.readlines(): # pin_id
getTotal(row) # board_id and section can use defaults
time.sleep(random.randint(1,3)) # wait 1-3 seconds
我想将它应用于我的 csv 文件中的每一行,但它给了我"ValueError : unconverted data remains : 2022-06-03,2021-05-29,2024-06-03,2022-05-29,2026-06-03,2023-05-29,2028-06-03,2024-05-29,2030-06-03,2025-05-29,2032-06-03
与我的 .csv 的第一行一致文件。
决赛:
from datetime import datetime
def getTotal(line):
dates = [datetime.strptime(elem.strip(), '%Y-%m-%d') for elem in line.split(',')]
total = 0
for i in range(0, len(dates), 2):
delta = dates[i+1] - dates[i]
if delta.days > 90:
total += 2
else:
total += 1
return total
print(getTotal(dates))
with open('dataset.csv','r') as csvfile:
for row in csvfile.readlines():
getTotal(row)
尝试这个:
def getTotal(line):
dates = [datetime.strptime(elem.strip(), '%Y-%m-%d') for elem in line.split(',')]
...
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