Python RegEx | Python Regular Expressions Tutorial | Python Tutorial | Python Training | Edureka

[@edurekaIN]

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[@isaacway4449]

Thanks for the video. Your example at 31:00 is explained incorrectly, I'm afraid it might confuse people who watch this video. You match the pattern "\d{5,7}" to the string of numbers and explain it as "Searching for the numbers in the range 5-7 and matching to those numbers." Thats not actually what the curly-brace syntax specifies. The curly brace syntax \d{5,7} means match ANY number character (0-9) such that there are 5 to 7 number characters in a row. You explain it as matching any number characters in the range 5-7, the fact that there were 3 matches was purely coincidence created by the fact that the strings were literally digits in order from 1 to whatever, and once the digit sequences reached a length of 5 they actually included the number 5. The fact that the sequence matched once the sequence included 5 was because the LENGTH of the sequence was 5, not because the sequence included the character 5 itself. Later on, you use the curly braces again with "\w{3}", where you explain it and use it correctly. Thanks again.

[@edurekaIN]

Hey Issac, thank you for pointing this out. We will definitely look into this. Cheers :)

[@amiyaramantripathi6320]

thx for the help buddy

[@sanjeevKumar-eg6hp]

The most important part of video is at 11:13 to 11:52 where they have explained how regular expression work, This alone makes the understandility of the concept very easy and all the examples were well explained.(Although there was one mistake in video) Thanks edureka for making such an amazing video

[@edurekaIN]

You're welcome 😊 Stay connected with our channel and team :) . Do subscribe the channel for more updates : ) Hit the bell icon to never miss an update from our channel : )

[@naf_iya7225]

one of the great tutorial ever 👏👏👏👏

[@edurekaIN]

Thank you 😊Glad it was helpful!!

[@vasanthm6170]

Very helpful I spent hardly 2 hour of time and covered this topic completely. Thank you..!

[@AdityaSauravadi_saurav]

your voice is very convincing. The way you teach is damn good. Thanks for your kind support

[@edurekaIN]

You're welcome 😊 Glad it was helpful!

[@denisseadrianaorozco5988]

Saludos desde Ecuador! Excelente tutorial :)

[@JoshPeterson]

This was fantastic. Thank you!

[@mayanksharma5540]

Too much helpful and incredible practical explanation ❤❤

[@edurekaIN]

Thank you so much : ) We are glad to be a part of your learning journey. Do subscribe the channel for more updates : ) Hit the bell icon to never miss an update from our channel : )

[@phaneshpadki3429]

nice tutorial.. but it looks like at 31:51 while explaining the regex u explained it wrongly. the numbers in the curly braces don't literally match with the numbers in the string, they only denote the length of the searched pattern. "\d[5}" will search for any 5 digit number. it wont check if the number has 5 in it. That's my understanding.

[@phaneshpadki3429]

for example if u had 1235 instead of 1234 in you string then the expression "\d{5,7}" would not match that string (though it has 5 in it) as the length of 1235 is only 4.

[@SSS-hm4pw]

Great video. On spot and rich. Well done. Make more.

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[@kdroadie]

excellent tutorials nice work.

[@edurekaIN]

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[@ramchandracheke]

Thank you very much ! God bless you 😊

[@sushilraverkar007]

Very nice explanation. I found exactly that I want. Thank you so much.

[@35_akshaykeesari88]

excellent video.....""""

[@kunalsoni7681]

awesome explanation 😊😊😊

[@learnwith6879]

Very nice explained. It helped me a lot.

[@dragangosevski6425]

Thanks for tutorials.Greetings from Serbia.

[@anandhin235]

Thank you so much for sharing this awesome video. Grateful to you @edureka!!

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We are super happy that Edureka is helping you learn better. Your support means a lot to us and it motivated us to create even better learning content and courses experience for you . Do subscribe the channel for more updates : ) Hit the bell icon to never miss an update from our channel : )

[@semicolonacademy9599]

One of the best instructor in youtube ! Thanks a lot for this tutorial.

[@edurekaIN]

Hey Semicolon academy, thank you for watching our video. We are glad to know that you found it useful. Do subscribe and stay tuned for more such updates in the near future. Cheers :)

[@ashishsahoo6394]

Regular expressions concepts explained very well, really helped me for the exam preparation, thanks a ton

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Thank you for appreciating our work, Ashish. We are delighted to see learners like you on board with us. Do subscribe to the channel and hit the bell icon to never miss an update from us in the future. Cheers!

[@PrAsHaNtHdUke1093]

thanks a lot bro...upload more videos..........

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We are super happy that Edureka is helping you learn better. Your support means a lot to us and it motivated us to create even better learning content and courses experience for you . Do subscribe the channel for more updates : ) Hit the bell icon to never miss an update from our channel : )

[@abhishek-xv5ow]

much Helpful , thanks a lot :)

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[@rohitpant6473]

loved the session

[@naramcharitha1150]

Excellent lecture,thaks for the course

[@edurekaIN]

We are super happy that Edureka is helping you learn better. Your support means a lot to us and it motivated us to create even better learning content and courses experience for you . Do subscribe the channel for more updates : ) Hit the bell icon to never miss an update from our channel : )

[@rbharu1133]

Its a very nice tutorial, thank you edureka

[@swarnachoppella388]

Thank you.. Good information

[@edurekaIN]

You are welcome👍

[@amitkumargupta6722]

one of the great tutorial ever .....

[@tarekghosn3648]

pure awesomeness

[@kevalrajpal4244]

Excellent Service sir really appreciate your work. Thank you so much

[@edurekaIN]

Hey, glad you loved the video. Do subscribe and hit the bell icon to never miss an update from us in the future. Cheers!

[@parthsachan1130]

GREAT!!!!!!!

[@hardikpatel-dc9rc]

good sir ,very very good thz a lot

[@edurekaIN]

You are welcome👍

[@auroshisray9140]

great tutorial

[@jadavnaveen1006]

exceelent

[@kkp01]

Brilliant for starters

[@maxwellochieng4924]

an excellent tutorial. I love edureka

[@edurekaIN]

Thanks for the compliment Maxwel!

[@viz3267]

Your way of talking is too good....

[@yasminshaik4935]

Thanks for the tutorial. Also wondering if there's any tutorial for error handling in python?

[@edurekaIN]

Hey Yasmin, thanks for checking out our tutorial. We do not have a tutorial on this particular topic but you can find related tutorials here: kzbin.info/aero/PL9ooVrP1hQOHY-BeYrKHDrHKphsJOyRyu. You can also check out our complete training here: www.edureka.co/python.Do subscribe to our channel to stay posted on upcoming tutorials. Hope this helps. Cheers!

[@anandnataraj6599]

Excellent tutorial

[@edurekaIN]

Thank you for watching our video. Do subscribe, like and share to stay connected with us. Cheers :)

[@RATANAGARWALITINFORMER]

nice info

[@0xayman]

Brilliant explain

[@pottalokesh2039]

At 45:53 why it was taken like this in with two '\' in \(\d{3}\)

[@geniusgamer337]

39:48

[@truthprevails899]

Thanks!

[@edurekaIN]

Thank you for watching our video. Do subscribe, like and share to stay connected with us. Cheers :)

[@mousemouse1818]

nice article

[@priyankaagrahari1073]

good video

[@dhanushabhandarkar6194]

good job

[@zeeshanqureshi9252]

1-Stop Shop Lot of Respect Sir.

[@edurekaIN]

Hey Zeeshan, thank you for appreciating our work. We are glad that you liked our video. Do subscribe to the channel and hit the bell icon to never miss an update from us in the future. Have a good day! 😊

[@saptarshimazumder5252]

Nice tuitorial , except it should be: "Keep the Red flag flying high Manchester United" XD

[@edurekaIN]

Haha Saptarshi, maybe we will use this in our upcoming tutorials! Do subscribe and stay tuned for more updates on our channel. Cheers :)

[@prathamvardaan4187]

Nice

[@gaganbhawsar3387]

thanks for tutorials i want to ask what is the use of re.match

[@edurekaIN]

Hi Gagan, thanks for checking out our tutorial. If zero or more characters at the beginning of string match the regular expression pattern then re.match() will return a corresponding match object. It will return Null, if the string does not match the pattern. Hope this helps. Cheers!

[@thehalasoft]

It returns the number of matches found.

[@pawaryash007]

Hi, which shell or editor or idle you have used to run the codes?

[@edurekaIN]

Hey Pawar, Have used Pycharm community edition 2016.3.2.

[@andriiburka]

love indian lessons

[@ManinderSinghSidhu89]

the example you used "Sat, mat , pat hat", it is clear why to use r"[smph]at". but what if we have words like "skin, din, pin, spin" all these words are ending with "in" but starting is little complex. And if we want to find only "Skin" and "pin", How to do it here????

[@edurekaIN]

Hi, this is simple to do. You can have something that goes like [a-z]*in where we can have any number of characters before in. Hope this helps you out.

[@harishsivasubramanian161]

Can we use Regex to match pattern between strings from two separate list?

[@edurekaIN]

Hey Harish, Yes, it can be done. Cheers!

[@gouravbatra3656]

difference between re.findall[ABCd][ab] and re.findall[ABCd]ab

[@edurekaIN]

Hey Gorav, re.findall[ABCd][ab] searches for letter in [ABCd] and followed by 'a' or 'b' while in re.findall[ABCd]ab the pattern is matched only if it ends with ab. Hope this helps!

[@Varunsharma-sg2nt]

What is the significance of 'r'? re.findall(r'' ", string)

[@edurekaIN]

Hi Varun, the r string prefix is not specifically related to regex's, but to strings generally in Python. Normal strings use the backslash character as an escape character for special characters. The r prefix tells the interpreter not to do this.

[@Varunsharma-sg2nt]

@@edurekaIN Yes Got it Raw string right

[@scotthjackson5651]

What's the regex for finding words that end with the letter "s"?

[@edurekaIN]

Hi Scott, You can use this: regex = r'\b(#\w*[^#\W]|[^#\W]\w*#)\b'.replace('#', letter) Hope this helps. Cheers!

[@anuhyaakkineni4939]

what does span() function do??

[@edurekaIN]

Hey Anuhya, span() returns both start and end indexes in a single tuple.

[@Niranjan-f8w]

What is span()

[@mayukhbanerjee8877]

How do we replace a string

[@edurekaIN]

To do this in Python, use the sub function. sub takes up to 3 arguments: The text to replace with, the text to replace in, and, optionally, the maximum number of substitutions to make.

[@SanjitKumar-hw9hd]

for your knowledge -> c++ is also a programming language

[@mulpurikalikiran3483]

what is r

[@edurekaIN]

Indicates that the string needs to be treated as a raw string. Hope that solves your query.

[@akshaypatel1362]

:)

[@howtocode2054]

Very well explained.

[@jerrygeorge180]

Nice tutorial thanks a lot

[@edurekaIN]

Thank you so much for the review ,we appreciate your efforts : ) We are glad that you have enjoyed your learning experience with us .Thank You for being a part of our Edureka team : ) Do subscribe the channel for more updates : ) Hit the bell icon to never miss an update from our channel : )

[@shubhoo_7781]

thanks a lot

[@edurekaIN]

You’re welcome 😊

[@mohamedswadiquek6132]

Excellent tutorial

[@OneMinuteFactsz]

What does re.compile do? Pls expain

[@edurekaIN]

We can combine a regular expression pattern into pattern objects, which can be used for pattern matching. It also helps to search a pattern again without rewriting it. Hope this is helpful! Cheers!