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It Drew 238 Lines and the CSV Is Empty: What 366 Drawing-Only Pine Scripts Taught Me

It Drew 238 Lines and the CSV Is Empty: What 366 Drawing-Only Pine Scripts Taught Me Your Pine script draws 238 lines, 486 labels, 360 boxes. The Python port runs without errors. The output file is 0

12 min readleichenbuilds.hashnode.dev

Lei Chen1d ago

It Ran Fine. It Produced Nothing: What 196 Silent Pine Scripts Taught Me

It Ran Fine. It Produced Nothing: What 196 Silent Pine Scripts Taught Me Your Pine script compiles. Your Python port runs without errors. The output file is empty. "It ran" and "it works" are differe

10 min readleichenbuilds.hashnode.dev

Lei Chen2d ago

I Fixed the Exit Bracket My Last Post Got Wrong. The Strategy Got Worse.

In my last post I proved my own post #2 was wrong: the "ATR bracket" in that RSI strategy was never an ATR bracket. strategy.exit's profit and loss are distances in ticks, not price points, so on the

9 min readleichenbuilds.hashnode.dev

Lei Chen3d ago

Same Pine Script, Two Backtests, Opposite Results — Here's the Exact Bar Where They Diverge

One script. One dataset. Two backtests. One says the strategy loses 13.5%. The other says it makes money. Neither backtest is lying — they disagree about three things the script never says out loud: w

9 min readleichenbuilds.hashnode.dev

Lei Chen5d ago

I Ran 1,909 Real Pine Scripts Through a Translator. Here's What Actually Breaks

Your Pine script compiles. Your Python port runs. And the backtest still disagrees with TradingView. I spent the last few months finding out exactly where that gap lives — not by arguing about it, but

10 min readleichenbuilds.hashnode.dev

Lei Chen6d ago

I Converted an RSI Mean-Reversion Strategy from Pine Script to Python — and the Exit Bracket Is Where It Gets Tricky

Every Pine Script developer hits the same wall eventually. Your strategy works on TradingView, but you want more: a ten-year backtest on your own data, a parameter sweep over 200 symbols, or a walk-fo

7 min readleichenbuilds.hashnode.dev

Valerii SakaraAug 29

The request.security() Value That Isn't There Yet

"Profitable in the Strategy Tester, losing money live" usually gets blamed on slippage. One specific, mechanically checkable cause is worth ruling out first — and it's documented behavior, not a rare

5 min readhonest-backtest.hashnode.dev

暮色Apr 9

The Silent Revolution in Backtesting: How Morpheum’s AgentScript Compiler Ends the Era of Simulated Theater

5 min readagentscript.hashnode.dev

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