自己做机器学习项目，手动打标签，完成后剪切一行数据到文件
参考内容：https://www.cnblogs.com/Dreamer-qiao/p/7390469.html
代码语言：javascript复制# 剪切一行数据到另外一个文件
# 用途：自己做机器学习数据，打标签，标记source第一行数据的label后，剪切追加到 target 最后
source = "train_data.txt"
target0 = "train_data_0.txt"
target1 = "train_data_1.txt"
def del_line_from(file, del_line): # del_line 行号从1开始
with open(file, 'r', encoding="utf-8") as old_file:
with open(file, 'r ', encoding="utf-8") as new_file:
current_line = 0
# 定位到需要删除的行
while current_line < (del_line - 1):
old_file.readline()
current_line = 1
# 当前光标在被删除行的行首，记录该位置
seek_point = old_file.tell()
# 设置光标位置
new_file.seek(seek_point, 0)
# 读需要删除的行，光标移到下一行行首
del_line_content = old_file.readline()
# 被删除行的下一行读给 next_line
next_line = old_file.readline()
# 连续覆盖剩余行，后面所有行上移一行
while next_line:
new_file.write(next_line)
next_line = old_file.readline()
# 写完最后一行后截断文件，因为删除操作，文件整体少了一行，原文件最后一行需要去掉
new_file.truncate()
return del_line_content # 剪切的行的内容
import sys
while True:
label = ""
try:
label = input()
except:
pass
with open(target0, 'a', encoding='utf-8') as f0:
with open(target1, 'a', encoding='utf-8') as f1:
data = del_line_from(source, 1)
if data == "":
continue
if label == "":
if data[-2] == "0":
f0.write(data) # 将剪切的行，追加写入目标文件
else:
f1.write(data)
elif label == "1":
if data[-2] == "0":
data = data[:-2] "1n"
f1.write(data)
elif label == "0":
if data[-2] == "1":
data = data[:-2] "0n"
f0.write(data)
else:
print("------输入有误-------")
print(data)另外，可以用 sublime text 安装 Auto Refresh 插件，自动刷新文档显示
在 cmd 窗口输入 python ***.py 就可以标注了：
直接回车，接受原来的标签
输入 0, 或者 1 标注当前数据标签
