Answer:
import pandas pd
def read_prices(tickers):
price_dict = {}
# Read ingthe ticker data for all the tickers
for ticker in tickers:
# Read data for one ticker using pandas.read_csv
# We assume no column names in csv file
ticker_data = pd.read_csv("./" + ticker + ".csv", names=['date', 'price', 'volume'])
# ticker_data is now a panda data frame
# Creating dictionary
# for the ticker
price_dict[ticker] = {}
for i in range(len(ticker_data)):
# Use pandas.iloc to access data
date = ticker_data.iloc[i]['date']
price = ticker_data.iloc[i]['price']
price_dict[ticker][date] = price
return price_dict
yes, a simple circuit will work without a switch. If we don't have a switch in a circuit then whichever device you are using electricity for wouldn't be able to switch off and will be working continuously. An open/close switch is usually all that is needed to supply or disconnect power from the source to the circuit.So, the circuit will work but it will work continuously.
Answer:
engine
Explanation:
as long as the engine and evrything is running it should be good
Answer:
Power supply relay coil
Explanation:
The power supply known as ATX used in today's PCs is very complicated kind of power supply. The main objective of ATX form of the power supply is conversion of the input supply from the line into different voltages to be supplied in order to run the desktop computer's mother board.
While the AT supply that was used many years back that supplied about 120 VAC, The ATX power supply in today's world is capable of supplying power supply of about 300 W or more.
Power supply relay coil is a solitary estimation of source voltage planned by configuration to be connected to the input or coil.
