<transcript><audio_159>powerful that um as we will see it has infinite look ahead uh an interesting fact is that if you look at the comits uh so the first version of python is the 1919 uh 1990 and the P parer was introduced in 2020 so it's 30 years</transcript><transcript><audio_160>since the the new the old parer was working there uh so quite a long time for a par written in 1990 it serve as well um so sorry the dates are there uh cool so so the the these partes are so powerful that they basically have</transcript><transcript><audio_161>infinite backtracking this means that they can backtrack compared with you know the regular other parsers they can backtrack infin infinitely um to to find like which which one of the possibilities is correct and this is what we say that is you know exponential</transcript><transcript><audio_162>time and if you don't introduce the memorization C correctly it can have problems so for for instance this is a real problem that happened uh if you try to pass this incorrect python syntax so a bunch of Open brackets and then a column uh this takes 2 seconds you try</transcript><caption><image_163>The image is a screenshot of a chat window with a message in the center. The message reads "$ python - c # takes ~2 seconds". Below the message, there is a blue line graph with a white background. On the left side of the image, there are three colorful dots - red, green, and yellow - representing the colors of the chat window. On top of the graph, there appears to be a profile picture of a man wearing a headset. The background is a beige color.</caption><transcript><audio_164>to pass like something a bit bigger uh but it's still incorrect this takes over an hour and this was a real example it's an example that now is fixed it takes now milliseconds um but this was a real example because we forgot to add a cash in a specific Place reporting error messages and you know here's the comit</transcript> powerful that um as we will see it has infinite look ahead uh an interesting fact is that if you look at the comits uh so the first version of python is the 1919 uh 1990 and the P parer was introduced in 2020 so it's 30 years since the the new the old parer was working there uh so quite a long time for a par written in 1990 it serve as well um so sorry the dates are there uh cool so so the the these partes are so powerful that they basically have infinite backtracking this means that they can backtrack compared with you know the regular other parsers they can backtrack infin infinitely um to to find like which which one of the possibilities is correct and this is what we say that is you know exponential time and if you don't introduce the memorization C correctly it can have problems so for for instance this is a real problem that happened uh if you try to pass this incorrect python syntax so a bunch of Open brackets and then a column uh this takes 2 seconds you try to pass like something a bit bigger uh but it's still incorrect this takes over an hour and this was a real example it's an example that now is fixed it takes now milliseconds um but this was a real example because we forgot to add a cash in a specific Place reporting error messages and you know here's the comit
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