# 空白泛指任何非打印字符，如空格，制表符和换行
# 在字符串中添加制表符\t
print("Python")
print("\tPython")
# 在字符串中添加换行符\n
print("Languages:\nPython\nC\nJavaScript")
# 在同一个字符串中可以同时包含制表符和换行符
print("Languages:\n\tPython\n\tC\n\tJavaScript")
D:\PycharmProjects\pythonProject2\venv\Scripts\python.exe D:/PycharmProjects/pythonProject2/hello2.py
Python
Python
Languages:
Python
C
JavaScript
Languages:
Python
C
JavaScript
Process finished with exit code 0
# 变量名只能包含字母，数字和下划线
# 变量名能以字母和下划线开头，但不能以数字开头
# 变量名不能包含空格
# 使用字符串的.title()方法修改大小写
name = 'harvey mei'
print(name.title()) # 该方法以首字母大写的方式显示每个单词
# 将字符串全部改为大写或小写
name = 'Ada Lovelace'
print(name.upper()) # 大写
print(name.lower()) # 小写
# 在字符串中使用变量
first_name = 'tom'
last_name = 'chen'
full_name = f"{first_name} {last_name}" # f字符串在python3.6引入
print(full_name)
first_name = 'alice'
last_name = 'wang'
full_name = "{} {}".format(first_name, last_name) # 使用python3.5或更早版本需要使用format()方法
print(full_name)
D:\PycharmProjects\pythonProject2\venv\Scripts\python.exe D:/PycharmProjects/pythonProject2/hello1.py
Harvey Mei
ADA LOVELACE
ada lovelace
tom chen
alice wang
Process finished with exit code 0
False await else import pass None break except in raise True class finally is return and continue for lambda try as def from nonlocal while assert del global not with async elif if or yield
https://docs.python.org/zh-cn/3/reference/lexical_analysis.html#keywords