Python|通过键相交两个字典

给定两个字典，任务是通过键找到这两个字典的交集。让我们看看执行此任务的不同方法。方法 #1：使用 dict 理解

# Python code to demonstrate
# intersection of two dictionaries 
# using dict comprehension
  
# inititialising dictionary
ini_dict1 = {'nikhil': 1, 'vashu' : 5, 
             'manjeet' : 10, 'akshat' : 15}
ini_dict2 = {'akshat' :15, 'nikhil' : 1, 'me' : 56}
  
# printing initial json
print ("initial 1st dictionary", ini_dict1)
print ("initial 2nd dictionary", ini_dict2)
  
# intersecting two dictionaries
final_dict = {x:ini_dict1[x] for x in ini_dict1 
                              if x in ini_dict2}
  
# printing final result
print ("final dictionary", str(final_dict))

输出：

initial 1st dictionary {‘vashu’: 5, ‘manjeet’: 10, ‘nikhil’: 1, ‘akshat’: 15}
initial 2nd dictionary {‘nikhil’: 1, ‘me’: 56, ‘akshat’: 15}
final dictionary {‘nikhil’: 1, ‘akshat’: 15}

方法 #2：使用& operator

# Python code to demonstrate
# intersection of two dictionaries 
# using dict comprehension
  
# inititialising dictionary
ini_dict1 = {'nikhil': 1, 'vashu' : 5,
             'manjeet' : 10, 'akshat' : 15}
ini_dict2 = {'akshat' :15, 'nikhil' : 1, 'me' : 56}
  
# printing initial json
print ("initial 1st dictionary", ini_dict1)
print ("initial 2nd dictionary", ini_dict2)
  
# intersecting two dictionaries
final_dict = dict(ini_dict1.items() & ini_dict2.items())
  
# printing final result
print ("final dictionary", str(final_dict))

输出：

initial 1st dictionary {‘vashu’: 5, ‘manjeet’: 10, ‘nikhil’: 1, ‘akshat’: 15}
initial 2nd dictionary {‘nikhil’: 1, ‘akshat’: 15, ‘me’: 56}
final dictionary {‘nikhil’: 1, ‘akshat’: 15}