今天开始记录学习python过程中遇到的问题和并做一些笔记。
一、第一个程序。
第一个学习的命令是print。
利用IDLE写命令时，每写完一次命令回车时，命令会被立即执行。例：
>>> print("Well I wonder, could it be")
Well I wonder, could it be
>>> print("when I was dreaming about you baby, you were dreaming of me")
when I was dreaming about you baby, you were dreaming of me
>>> print("Did I lose my love to someone better?")
Did I lose my love to someone better?
>>> print("Did she love you like I do?")
Did she love you like I do?
>>> print("I do you know I really really do")
I do you know I really really do
保存到E盘 建立新的文件夹“abc”，保存文件py1.py。
1、利用cmd调用这几个命令时：
C:UsersShannon_V>python py1.py
(null): can't open file 'py1.py': [Errno 2] No such file or directory
报错1：
(null): can't open file 'py1.py': [Errno 2] No such file or directory
解决方法：
需要到指定的保存路径即E盘/abc文件夹下调用：
C:UsersShannon_V>E:
E:>cd E:abc
E:abc>python py1.py
File "py1.py", line 1
>>> print("Well I wonder, could it be")
^
SyntaxError: invalid syntax
报错2：
File "py1.py", line 1
>>> print("Well I wonder, could it be")
^
SyntaxError: invalid syntax
解决方法：
不能直接调用IDLE保存的文件，因为这个文件里包括了命令行和已经执行了命令，可以将命令单独粘贴只文本编辑器（写字板也可以，保存时应保存为py文件），例：
print("Well I wonder, could it be")
print("when I was dreaming about you baby, you were dreaming of me")
print("Did I lose my love to someone better?")
print("Did she love you like I do?")
print("I do you know I really really do")
只保留命令即可打开：
C:UsersShannon_V>E:
E:>cd E:abc
E:abc>python py1.py
Well I wonder, could it be
when I was dreaming about you baby, you were dreaming of me
Did I lose my love to someone better?
Did she love you like I do?
I do you know I really really do
How do I carry on?
The day you went away
please enter any key to exit...
同样，如果直接利用python打开由IDLE保存的py文件，会出现闪退的情况，此时也需要将命令行并且只将命令行单独保存成py文件，即可双击文件，利用python打开命令。
2、将脚本都打印在同一行。
在输入所需要打印的文本后面加上end=””，即可将文本打印在同一行。
print("si",end="")
print("cudsihi",end="")
print("Did she love you like I do?",end="")
print("I do you know I really really do",end="")
总结：
由于完全没有任何计算机基础，所以在以上几个问题中摸索了很久。现小节如下：
1、python文件应只保存命令行。
2、需要到指定的文件夹下才能成功调用。
3、利用end=“”可以让脚本都打印在同一行。