Example of using the item () method in Python to traverse a dictionary

There are several ways to traverse a Python dictionary, one of which is for...in, which I do not specify, which is visible in python almost everywhere for...in. The following way of traversal is the item () method.

Item ()

The item () method consists of a tuple of each pair of keys and value in the dictionary, and the tuples are placed back in the list.

DEMO

Code:
Copy the Code code as follows:

person={' name ': ' Lizhong ', ' age ': ' + ', ' City ': ' Beijing ', ' blog ': ' Www.jb51.net '}

For Key,value in Person.items ():
print ' key= ', Key, ', value= ', value

Execution Result:

Visible key receives the dictionary's key,value to receive the dictionary value value.
But what if only one parameter is received?
Copy the Code code as follows:

person={' name ': ' Lizhong ', ' age ': ' + ', ' City ': ' Beijing ', ' blog ': ' Www.jb51.net '}

For x in Person.items ():
Print X

Execution results

When only one variable receives a value, the tuple that corresponds to each pair of Key,value is returned directly.

Using the item () is a bit similar to a foreach in PHP. Can be a key to the value of the way to traverse out, if pure use for. In can only get the key value for each pair of elements

such as code:
Copy the Code code as follows:

person={' name ': ' Lizhong ', ' age ': ' + ', ' City ': ' Beijing ', ' blog ': ' Www.jb51.net '}

For x in person:
Print X

Execution Result:

