请问split中‘t',1代表什么.还有这段话.不过line.split()不是正则式.for line in csvlines:splitline = line.split('\t',1)if len(splitline) == 2:if (splitline[0] in overrides):splitline[1] = overrides[splitline[0]] + "\n"del overrides[sp
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![请问split中‘t',1代表什么.还有这段话.不过line.split()不是正则式.for line in csvlines:splitline = line.split('\t',1)if len(splitline) == 2:if (splitline[0] in overrides):splitline[1] = overrides[splitline[0]] +](/uploads/image/z/8969506-34-6.jpg?t=%E8%AF%B7%E9%97%AEsplit%E4%B8%AD%E2%80%98t%27%2C1%E4%BB%A3%E8%A1%A8%E4%BB%80%E4%B9%88.%E8%BF%98%E6%9C%89%E8%BF%99%E6%AE%B5%E8%AF%9D.%E4%B8%8D%E8%BF%87line.split%28%29%E4%B8%8D%E6%98%AF%E6%AD%A3%E5%88%99%E5%BC%8F.for+line+in+csvlines%3Asplitline+%3D+line.split%28%27%5Ct%27%2C1%29if+len%28splitline%29+%3D%3D+2%3Aif+%28splitline%5B0%5D+in+overrides%29%3Asplitline%5B1%5D+%3D+overrides%5Bsplitline%5B0%5D%5D+%2B+%22%5Cn%22del+overrides%5Bsp)
请问split中‘t',1代表什么.还有这段话.不过line.split()不是正则式.for line in csvlines:splitline = line.split('\t',1)if len(splitline) == 2:if (splitline[0] in overrides):splitline[1] = overrides[splitline[0]] + "\n"del overrides[sp
请问split中‘t',1代表什么.还有这段话.不过line.split()不是正则式.
for line in csvlines:
splitline = line.split('\t',1)
if len(splitline) == 2:
if (splitline[0] in overrides):
splitline[1] = overrides[splitline[0]] + "\n"
del overrides[splitline[0]]
line = '\t'.join(splitline)
csvfile.write(line)
for newvalue in overrides:
csvfile.write(newvalue + "\t" + overrides[newvalue] + "\n")
csvfile.close()
如果是正则式符号,应写成re.split().在这为何这样写.
请问split中‘t',1代表什么.还有这段话.不过line.split()不是正则式.for line in csvlines:splitline = line.split('\t',1)if len(splitline) == 2:if (splitline[0] in overrides):splitline[1] = overrides[splitline[0]] + "\n"del overrides[sp
\t 制表符 就是8个空格
for line in csvlines://文件一行行读取
splitline = line.split('\t',1) //以空格分割,选取第二个字符串
if len(splitline) == 2://如果字符串长度为2
if (splitline[0] in overrides):// 第一个字符 是否在 overrides 中,在执行下面 的
splitline[1] = overrides[splitline[0]] + "\n"
del overrides[splitline[0]]
line = '\t'.join(splitline) //list 转化成str
csvfile.write(line) //写入
for newvalue in overrides://打印
csvfile.write(newvalue + "\t" + overrides[newvalue] + "\n")
csvfile.close()