python创建一个txt文件python新建txt文件，并逐行写入数据

#coding&＃61;utf-8

txtName &＃61; "codingWord.txt"

f&＃61;file(txtName, "a&＃43;")

for i in range(1,100):

if i % 2 &＃61;&＃61; 0:

new_context &＃61; "C&＃43;&＃43;" &＃43; &＃39; &＃39;

f.write(new_context)

else:

new_context &＃61; "Python" &＃43; &＃39; &＃39;

f.write(new_context)

f.close()

实际应用&＃xff0c;合并libsvm所需要格式的两个txt特征值

方法1&＃xff1a;

#coding&＃61;utf-8

import numpy as np

import os

cwd &＃61; os.getcwd()

txtFile1 &＃61; cwd &＃43; &＃39;/first.txt&＃39;

txtFile2 &＃61; cwd &＃43; &＃39;/second.txt&＃39;

mergeFile2 &＃61; cwd &＃43; &＃39;/mergeTXT.txt&＃39;

f &＃61; file(mergeFile2, &＃39;a&＃43;&＃39;)

for (index1, line1) in enumerate(open(txtFile1)):

# print index1, line1

for (index2, line2) in enumerate(open(txtFile2)):

if index1 &＃61;&＃61; index2:

newline &＃61; line1 &＃43; line2 &＃43; &＃39; &＃39;

f.write(newline)

f.close()

方法2&＃xff1a;

first&＃61;[]

second&＃61;[]

f&＃61;open(&＃39;mergeTXT.txt&＃39;,&＃39;w&＃39;)

with open(&＃39;first.txt&＃39;, &＃39;r&＃39;) as f1:

for line in f1:

line&＃61;line.strip()

first.append(line)

with open(&＃39;second.txt&＃39;, &＃39;r&＃39;) as f2:

for line2 in f2:

line2&＃61;line2.strip()

second.append(line2)

for i in range(0,399):

result&＃61;first[i]&＃43;&＃39; &＃39;&＃43;second[i]&＃43;&＃39; &＃39;

f.write(result)