Philadelphia — This city, known to close on Sundays, is also shut Monday through Saturday. Its all-night diner closes 7:15. But Philly’s not only home to the Constitution and the Liberty Bell, but also to Betsy Ross and Ben Franklin. So don’t knock it. Last week, Cleveland’s hottest celebrity was Ivanka’s driver.

Sen. Chuck Schumer picked restaurant El Vez, whose table cards advertised “Hillaritas,” for our talk. Through the din, he shouted:

“Historic, I’d be New York’s first majority leader in over 100 years — from any party. But it won’t change my style. Still do TV Sundays. Still in my bones to be all over our streets. I’m from Brooklyn. I know to learn from the streets.

“At a recent street fair, a middle-class college girl said, ‘My parents can afford a good house. Not sure I can. They bought a good car. I can’t. They did college without debt. Not me. What’s wrong with us?’ I told her my job’s to change it.”

Yeah, OK, but what is wrong with us?

“It’s our history. People always want the same things — good jobs, a future for children, ability to go to college. Periodically they lose faith. But never lose faith in America. We’re the best. When middle income declines, people get angry. But things always get better. And name-calling won’t put one dime in any pocket.

“Yes, we need better roads, repaired bridges, new tunnels. Know Miss Liberty holds her torch. It may flicker, but always stays. It never goes out. It feeds on optimism.

“Being from Brooklyn sometimes helps, sometimes hurts. But I tell candidates, ‘Don’t BS.’”

The emergency that wasn’t …

Besides Hillaryville protests and demonstrations — some placards read “Honk for free weed” — at 5 a.m.-ish Monday my hotel room sounded an ear-piercing alarm. A siren. All asleep were awakened. This recording repeated loudly through the phone: “Emergency . . . Evacuate . . . Do not use the elevator . . . Use stairs . . . Leave your rooms immediately.”

Everyone filed out in forms of undress. Many in hotel bathrobes. Our exit led to the street. It was raining. We clustered on the sidewalk wet.

No senior executive arrived to take charge. We shuffled around 40 minutes. The alarm kept shrieking. Guests were eventually allowed to climb back up to our rooms. The alarms continued until the Fire Department arrived to shut them.

Nobody explained what happened. The desk clerk said, “Something triggered the alarm.” Like what? “I’m not at liberty to say.” I called the manager, who never seemed at liberty to call me back.

The kindly room-service man said, “Our whole system went down,” when much much later he brought hot coffee and breakfast in Styrofoam containers with plastic utensils inside a see-through baggie carried in a brown paper bag.

And he actually asked me, “Do you know what happened?”

Men at work

Eagle Academy, operating six public schools for 4,000 boys from tough NY/NJ neighborhoods, graduates men of color — 98 percent in colleges this year. They will present at the convention. Hillary helped them get started.

Take my bag

The DNC’s welcome party was at the Philadelphia Museum of Art. It was jammed. No Democrat left behind — except for ex- DNC chairperp Debbie Wasserman Schultz and Bernie Sanders.

My car? Not there. Nearest cab? In Altoona. With armies in town, you’d only be in a taxi if your mom gave birth in it. I walked. A) It was a mile away. B) The city’s unfamiliar. C) Its borrowed out-of-town cops couldn’t even direct themselves to the men’s room. D) Temperature’s in the high 90s.

I arrived wetter than a flounder — and security seized my handbag. “Not allowed. We must protect the art,” they squeaked. “In New York, a larger city, the Metropolitan Museum of Art lets you keep your purse,” I shrieked. They won.

Listen, so far I have had it with this town.