Variables and Simple Data Types

# chapter2 
# variables and simple data types


# 1.Hello World

print("Hello World!")

# 2.变量

message = "Hello World!"
print(message)

# 3. String 

name = " ameng " 
print (name.title())
 # Convert the first letter to uppercase 
print (name.upper())
 # Convert all to uppercase 

new_name = " TOM " 
print (new_name.lower() )
 # Convert all to lowercase

# 4.字符串拼接

first_name = "尹猛"
last_name = "猛哥"
full_name = first_name + " " + last_name
print(full_name)

# 5. Remove spaces 

language = '   Python     ' 
print (language)
 print (language.rstrip())
 # rstrip() remove trailing spaces 
print (language.lstrip())
 # lstrip() remove header spaces 
print (language.strip ())
 # strip() removes all spaces

"""
strip
vi. stripping; performing striptease; stripping       
vt.       
n. Strips, strips; strips (or forests, lakes, etc.); (football players') sportswear  
"""

# 6.str() avoids type errors 

day = 9 
message = " There is still " + str(day) + " May Day is the day " 
print (message) #Convert
 non -string values ​​to strings