变量和字符串练习

　　断断续续的学了一段时间的python，今天开始系统的学习。在公司看不了视频教程，只能自己看看书，复习一下。

　　简单的写了一段代码，主要是练习变量和字符串的。　　

#string:artist_intro as confirm _information
what_he_does = ' plays '
his_instrument = 'guitar'
his_name = 'Robert Johnson'
artist_intro = his_name + what_he_does + his_instrument
#print(artist_intro)

#string slice
word = input('please enter your name:')
nick_name = word[0]+word[2:4]+word[-3:-1]
#print(nick_name)

phone_number = input('please enter your phone number:')
hiding_number = phone_number.replace(phone_number[3:9],'*' * 6)
#print(hiding_number)

information = ('your_nickname = %s\nyour_phone_number = %s\nconfirmation_sentence = %s
\n')%(word,hiding_number,artist_intro)
print('*'*50+'\n'+information+'*'*50+'\n')
file = open('test.txt','w')
file.write(information)
file.close()