message = "Hello Huang ZB!"
print(message)
message = "Goodbye Huang ZB!"
print(message)

message = "Hello Huang ZB!"
print(mesage)

name = "huang zhibin"
print(name.title())            #title()函數(shù)作用：將每個單詞首字母改為大寫

name = "huang zhibin"
print(name.title())   #title()函數(shù)作用：將每個單詞首字母改為大寫
print(name.upper())   #upper()函數(shù)作用：將字符串內(nèi)容全部轉(zhuǎn)換為大寫
print(name.lower())   #lower()函數(shù)作用：將字符串內(nèi)容全部轉(zhuǎn)換為小寫

first_name = 'huang'
last_name = 'zhibin'
full_name = first_name + ' ' + last_name
print('Hello, ' + full_name.title() + '!')    #這個 + 不可或缺

print("python")
print("\tpython")             # \t 表示制表符

print("Languages:\nPython\nC\nJavaScript")       # \n 表示換行符

print("Languages:\n\tPython\n\tC\n\tJavaScript")

information = '    人生苦短，我學(xué)python    '
print(information.rstrip())
print(information.lstrip())
print(information.strip())

>>> 2+3
5
>>> 5-6
-1
>>> 4*5
20
>>> 36/6
6.0
>>> 3**2
9
>>> 2+2**2
6
>>> (2+2)*2
8

>>> 0.2+0.3
0.5
>>> 0.2-0.3
-0.09999999999999998

print ('{:.2}'.format(變量))

>>> 2+6j
(2+6j)
>>> (2+6j).real
2.0
>>> (2+6j).imag
6.0

age = 21
message = "Happy " + str(age) + "rd Birthday!"     #將非字符串值轉(zhuǎn)化為字符串
print(message)

>>> import this
The Zen of Python, by Tim Peters
Beautiful is better than ugly.
Explicit is better than implicit.
Simple is better than complex.
Complex is better than complicated.
Flat is better than nested.
Sparse is better than dense.
Readability counts.
Special cases aren't special enough to break the rules.
Although practicality beats purity.
Errors should never pass silently.
Unless explicitly silenced.
In the face of ambiguity, refuse the temptation to guess.
There should be one-- and preferably only one --obvious way to do it.
Although that way may not be obvious at first unless you're Dutch.
Now is better than never.
Although never is often better than *right* now.
If the implementation is hard to explain, it's a bad idea.
If the implementation is easy to explain, it may be a good idea.
Namespaces are one honking great idea -- let's do more of those!