问题：Python中是否存在“不相等”运算符？
你怎么说不等于？
喜欢
if hi == hi:
print "hi"
elif hi (does not equal) bye:
print "no hi"
是否有等同于==“不平等”的东西？
How would you say does not equal?
Like
if hi == hi:
print "hi"
elif hi (does not equal) bye:
print "no hi"
Is there something equivalent to == that means “not equal”?
回答 0
使用!=。请参阅比较运算符。为了比较对象身份，可以使用关键字is及其否定词is not。
例如
1 == 1 # -> True
1 != 1 # -> False
[] is [] #-> False (distinct objects)
a = b = []; a is b # -> True (same object)
Use !=. See comparison operators. For comparing object identities, you can use the keyword is and its negation is not.
e.g.
1 == 1 # -> True
1 != 1 # -> False
[] is [] #-> False (distinct objects)
a = b = []; a is b # -> True (same object)
回答 1
不等于 != （vs等于==）
您是否在问这样的事情？
answer = 'hi'
if answer == 'hi': # equal
print "hi"
elif answer != 'hi': # not equal
print "no hi"
此Python-基本运算符图表可能会有所帮助。
Not equal != (vs equal ==)
Are you asking about something like this?
answer = 'hi'
if answer == 'hi': # equal
print "hi"
elif answer != 'hi': # not equal
print "no hi"
This Python – Basic Operators chart might be helpful.
回答 2
当两个值不同时，有一个!=（不相等）运算符返回True，尽管要小心类型，因为"1" != 1。"1" == 1由于类型不同，它将始终返回True，并且始终返回False。Python是动态的但是强类型的，而其他静态类型的语言会抱怨比较不同的类型。
还有else子句：
# This will always print either "hi" or "no hi" unless something unforeseen happens.
if hi == "hi": # The variable hi is being compared to the string "hi", strings are immutable in Python, so you could use the 'is' operator.
print "hi" # If indeed it is the string "hi" then print "hi"
else: # hi and "hi" are not the same
print "no hi"
该is运算符是对象标识运算符，用于检查两个对象实际上是否相同：
a = [1, 2]
b = [1, 2]
print a == b # This will print True since they have the same values
print a is b # This will print False since they are different objects.
There’s the != (not equal) operator that returns True when two values differ, though be careful with the types because "1" != 1. This will always return True and "1" == 1 will always return False, since the types differ. Python is dynamically, but strongly typed, and other statically typed languages would complain about comparing different types.
There’s also the else clause:
# This will always print either "hi" or "no hi" unless something unforeseen happens.
if hi == "hi": # The variable hi is being compared to the string "hi", strings are immutable in Python, so you could use the 'is' operator.
print "hi" # If indeed it is the string "hi" then print "hi"
else: # hi and "hi" are not the same
print "no hi"
The is operator is the object identity operator used to check if two objects in fact are the same:
a = [1, 2]
b = [1, 2]
print a == b # This will print True since they have the same values
print a is b # This will print False since they are different objects.
回答 3
您可以同时使用!=或<>。
但是，请注意，不建议!=在<>不推荐的地方使用它。
You can use both != or <>.
However, note that != is preferred where <> is deprecated.
回答 4
看到其他所有人都已经列出了大多数其他方式来表示不平等，我将添加：
if not (1) == (1): # This will eval true then false
# (ie: 1 == 1 is true but the opposite(not) is false)
print "the world is ending" # This will only run on a if true
elif (1+1) != (2): #second if
print "the world is ending"
# This will only run if the first if is false and the second if is true
else: # this will only run if the if both if's are false
print "you are good for another day"
在这种情况下，很容易将正==（true）的检查切换为负，反之亦然…
Seeing as everyone else has already listed most of the other ways to say not equal I will just add:
if not (1) == (1): # This will eval true then false
# (ie: 1 == 1 is true but the opposite(not) is false)
print "the world is ending" # This will only run on a if true
elif (1+1) != (2): #second if
print "the world is ending"
# This will only run if the first if is false and the second if is true
else: # this will only run if the if both if's are false
print "you are good for another day"
in this case it is simple switching the check of positive == (true) to negative and vise versa…
回答 5
您可以将“不等于”用于“不等于”或“！=“。请参见以下示例：
a = 2
if a == 2:
print("true")
else:
print("false")
上面的代码将在“ if”条件之前将“ true”打印为a = 2。现在，请参见下面的“不等于”代码
a = 2
if a is not 3:
print("not equal")
else:
print("equal")
上面的代码将打印“不等于”，即早先分配的a = 2。
You can use “is not” for “not equal” or “!=”. Please see the example below:
a = 2
if a == 2:
print("true")
else:
print("false")
The above code will print “true” as a = 2 assigned before the “if” condition. Now please see the code below for “not equal”
a = 2
if a is not 3:
print("not equal")
else:
print("equal")
The above code will print “not equal” as a = 2 as assigned earlier.
回答 6
Python中有两个用于“不相等”条件的运算符-
a。）！=如果两个操作数的值不相等，则条件变为true。（a！= b）是正确的。
b。）<>如果两个操作数的值不相等，则条件变为true。（a <> b）是正确的。这类似于！=运算符。
There are two operators in Python for the “not equal” condition –
a.) != If values of the two operands are not equal, then the condition becomes true.
(a != b) is true.
b.) <> If values of the two operands are not equal, then the condition becomes true.
(a <> b) is true. This is similar to the != operator.
回答 7
使用!=或<>。两者代表不平等。
比较运算符<>和!=是相同运算符的替代拼写。!=是首选拼写；<>是过时的。[参考：Python语言参考]
Use != or <>. Both stands for not equal.
The comparison operators <> and != are alternate spellings of the same operator. != is the preferred spelling; <> is obsolescent. [Reference: Python language reference]
回答 8
您可以简单地执行以下操作：
if hi == hi:
print "hi"
elif hi != bye:
print "no hi"
You can simply do:
if hi == hi:
print "hi"
elif hi != bye:
print "no hi"
