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# Dictionary with three keys
Dictionary1 = {'A': 'Geeks', 'B': 'For', 'C': 'Geeks'}
# Printing keys of dictionary
print(Dictionary1.keys())
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car = {
"brand": "Ford",
"model": "Mustang",
"year": 1964
}
# the keys are like variables in dictionary which saves a value
x = car.keys()
print(x)
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my_dict = {"apple": 4, "banana": 2, "orange": 5, "mango": 3}
keys = list(my_dict.keys())
print(keys)
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'''we define a dictionary store which tells us the inventory name and
the amount of inventory saved in stock'''
store = {"Salt":230,"Flour":540,"Oil":150,"Sugar":210,"Juice":100}
'''the keys function returns us a list of the set keys so we can use them
to our will'''
keys = store.keys()
print(keys)
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# keys in python
List_of_Students = {"Jim" : "Roll-32"+","+ "Priority-First",
"Yeasin": "Roll-33"+","+ "Priority-2nd",}
print(List_of_Students["Yeasin"])
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# Creating a sample dictionary
person = {
'name': 'John',
'age': 30,
'gender': 'Male'
}
# Accessing dictionary keys
keys = person.keys()
# Printing the keys
print(keys)
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import threading
from win32api import STD_INPUT_HANDLE
from win32console import GetStdHandle, KEY_EVENT, ENABLE_ECHO_INPUT, ENABLE_LINE_INPUT, ENABLE_PROCESSED_INPUT
class KeyAsyncReader():
def __init__(self):
self.stopLock = threading.Lock()
self.stopped = True
self.capturedChars = ""
self.readHandle = GetStdHandle(STD_INPUT_HANDLE)
self.readHandle.SetConsoleMode(ENABLE_LINE_INPUT|ENABLE_ECHO_INPUT|ENABLE_PROCESSED_INPUT)
def startReading(self, readCallback):
self.stopLock.acquire()
try:
if not self.stopped:
raise Exception("Capture is already going")
self.stopped = False
self.readCallback = readCallback
backgroundCaptureThread = threading.Thread(target=self.backgroundThreadReading)
backgroundCaptureThread.daemon = True
backgroundCaptureThread.start()
except:
self.stopLock.release()
raise
self.stopLock.release()
def backgroundThreadReading(self):
curEventLength = 0
curKeysLength = 0
while True:
eventsPeek = self.readHandle.PeekConsoleInput(10000)
self.stopLock.acquire()
if self.stopped:
self.stopLock.release()
return
self.stopLock.release()
if len(eventsPeek) == 0:
continue
if not len(eventsPeek) == curEventLength:
if self.getCharsFromEvents(eventsPeek[curEventLength:]):
self.stopLock.acquire()
self.stopped = True
self.stopLock.release()
break
curEventLength = len(eventsPeek)
def getCharsFromEvents(self, eventsPeek):
callbackReturnedTrue = False
for curEvent in eventsPeek:
if curEvent.EventType == KEY_EVENT:
if ord(curEvent.Char) == 0 or not curEvent.KeyDown:
pass
else:
curChar = str(curEvent.Char)
if self.readCallback(curChar) == True:
callbackReturnedTrue = True
return callbackReturnedTrue
def stopReading(self):
self.stopLock.acquire()
self.stopped = True
self.stopLock.release()