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Now we'll just see one function call to English check, OK, and for example, if we just go to the

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interactive shell here, we have already imported this English.

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Now we say is chick.

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English, that is.

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English, check this in capital, in Brakhage, we give Biton and just do one string in this, you know,

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let's give another Cicek.

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English dot is English chick.

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Python and 50.

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Still, it is true.

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OK, so now it is evaluated in the first one of this python coma, 20 commodity 500 in the city, despite

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the outcome of 50 80.

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Now, if you see, for example, to check English is English, check and you'll give Python comma 50,

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comma 60.

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Still, it is true or if you want to give see chick English, that is English chick in Brakhage the

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string and you want to go a four letter or send a star is equal to 60.

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So it is evaluated now I say Biton, then 20, the default one for one person in the CIA and 60 percent

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is still in this case.

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OK.

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So now, for example, the one which we have seen here, we are calling the function when it is called

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the second and third parameter specified program use, those parameters are not the default ones.

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Now, let's move back to our calculating percentages.

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Now, once we know the percentages are program will use, we will need to calculate the percentage,

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what the message is disastrous.

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For example, let us assume that we are having C..

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We just put this in the comment.

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OK, so we are having the string AC Biton, then one more vote, say OK, then we take some more again.

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Some more.

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OK, now again, some more.

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Now this particular string is having five votes, but in that case only, let's say, will make one

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more.

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Who is out of this?

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Only three votes are English.

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Now to calculate the percentage of English words in the string, you will have to divide the number

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of English words by total number of votes and multiply it by a hundred.

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So the percentage of English words in this case would be something like, say, three, divided by five,

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multiplied by a hundred, OK, which would be, for example, 60 percent in this case.

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OK, now similarly, suppose you have the number of English votes, says three or six.

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Let's take it now.

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Six and the number of votes.

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So again, if we say here six divided by, say, 10 multiplied by hundred would also come to sixty,

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or in that case they'll be gone.

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Almost thirty two English votes out of eighty seven multiplied by a hundred.

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This could give you something like forty six point seventy eight.

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For example, or zero English words, and then total votes multiplied by 100 will give you the value

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zero.

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OK, so this way we may have all different percentages calculated in this case.

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Now, the percentage will always be between zero percent, meaning no votes are English and 100 percent

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meaning all the votes are English.

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OK, so other is English or English.

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Check function will consider a string English if it is at least 20 percent of the vote existing in the

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dictionary and the rest.

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Eighty five percent of the correct those in the string of letters.

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Now this means the message will still be detected as English, even if the dictionary file is imperfect,

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or if some words in the message are something other than what we define as English words.

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OK, so now if we come back to our program, let us just remove this line in our program over here where

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we are calculating the percentage to recognize the English words in the messages by passing the message

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is start to get English comp, which does the division, and returns the floor between zero point zero

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and one point zero over here.

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OK, so we are seeing more majesty that is equal to get English or get English word count positive as

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a gesture multiplied by hundreds, if that's more than equal to the word percent this year.

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Now to get a percentage from this float multiplied by hundred if the resulting number is greater than

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or equal to four percent parameter through iStore in the word match, OK, otherwise false will be stopped.

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OK.

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Now similarly, if we go on to the next line where we are saying no to is equal to the length of removing

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one letter last year and passing the messages still to it.

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OK, we have written this function to find all the letters and space characters in a string, so we

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just need to reuse it.

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OK, similarly, if we see call to remove letters and the only one to get a string of just the letters

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and the space characters in the message is still not passing the string to the length function of the

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return total number of letters in space in the message.

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OK, the next line over here that we have is sending a message.

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Letter percentage is still is equal to convert to flow number letters divided by the length of messages

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in two hundred.

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Now over here we are getting the percentage of the letters by getting a flawed version of the integer

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in numbers and dividing it by the length of the message.

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The return value of this will be a total number of characters in our message is still OK.

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So as discussed previously, the call to float is made to make sure that this particular line performs

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a regular revision instead of integer division.

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Just in the case of the program to import your checking list, model is running on Python.

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OK, next, we check whether the percentage in our message a little percentage is greater than or equal

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to the letter percent this year.

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And this expression evaluates to a boolean value that is stored in the letters match SGA.

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Now we want is English check to return.

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True, only if both the word match is still that is in the first line and our letter match is in the

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second last line contains true.

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OK, so we have combined these values into expression using an angle.

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So we are saying little more magisterial and later majesty.

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So if both the four match and the letter match variables are true, that is the is English check will

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declare the message is English and return the value to otherwise reject it as a non English and return

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the value.

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Folson.

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That's OK.

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So in this way, we have created this particular file that is genuinely stoppie by file.

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Now in the next session, we will see how to use this in another file for checking the transposition

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transposition cipher in that.