我从一个文件中读取数据,然后写入另一个文件
一旦完成,我想用写入write_文件中的数据更新读取文件
这就是我正在尝试的。 回写需要在循环中,因为读取文件需要用新值更新
def execute(read_file, write_file):
with open(read_file, "r") as in_file:
reader = csv.reader(in_file)
with open(write_file, "w") as out_file, open(read_file, 'w') as in_file_a:
for row in reader:
writer = csv.writer(out_file)
wi = csv.writer(in_file_a)
if not row[0] and not row[1]:
row[0] = 'param1'
row[1] = 'param2'
a = writer.writerow(row)
wi.writerows(a)
我错过了什么
*更新*这是我从评论中了解到的
global myglobal
def overwrite(read_file):
overight_file = open(read_file, "w")
overight = csv.writer(overight_file)
overight.writerows(myglobal)
overight_file.close()
def execute(read_file, write_file):
in_file = open(read_file, "r")
reader = csv.reader(in_file)
out_file = open(write_file, "w")
writer = csv.writer(out_file)
for row in reader:
if not row[0] and not row[1]:
row[0] = 'param1'
row[1] = 'param2'
myglobal = writer.writerow(row)
overwrite(read_file)
in_file.close()
out_file.close()
目前没有回答
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