python2新建txt文件，并逐行写入数据

#coding=utf-8
import os
txtName = "codingWord.txt"
f=file(txtName, "a+")
for i in range(1,100):if i % 2 == 0:new_context = "C++" + '\n'f.write(new_context)else:new_context = "Python" + '\n'f.write(new_context)
f.close()

实际应用，合并libsvm所需要格式的两个txt特征值方法1：
python3新建txt文件，并逐行写入数据

#coding=utf-8
import os
txtName = "imagenames.txt"
f=open(txtName, "a+")
f.write(new_context)f.close()

 

方法2：

#coding=utf-8
import os
first=[]
second=[]
f=open('mergeTXT.txt','w')
with open('first.txt', 'r') as f1:for line in f1:line=line.strip()first.append(line)
with open('second.txt', 'r') as f2:for line2 in f2:line2=line2.strip()second.append(line2)
for i in range(0,399):result=first[i]+'\t'+second[i]+'\n'f.write(result)