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https://github.com/phoenix30coder/LAB

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4a Reading data from Textfile

file1 = open("myfile.txt","w") L = ["seek(n) takes the file handle to the nth bite from the beginning. \n","This is Paris \n","This is London \n"] # \n is placed to indicate EOL (End of Line) file1.write("Hello \nThis program manipulates text file\n") file1.writelines(L) file1.close() #to change file access modes     file1 = open("myfile.txt","r+") print("Output of Read function is ") print(file1.read()) print() # seek(n) takes the file handle to the nth # bite from the beginning. file1.seek(0) print( "Output of Readline function is ") print(file1.readline()) print() file1.seek(0) # To show difference between read and readline print("Output of Read(9) function is ") print(file1.read(9)) print() file1.seek(0) print("Output of Readline(9) function is ") print(file1.readline(9)) file1.seek(0) # readlines function print("Output of Readlines function is ") prin...
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Execute Basic Numpy operations

import numpy as np print(‘numpy version’, np.__version__) print(np.zeros(10, dtype='int')) print(np.ones((3,5), dtype=float)) print(np.full((3,5),1.23)) print('arange]n',np.arange(0, 21, 3)) print(np.linspace(0, 1, 5)) print(np.random.normal(0, 1, (3,3))) print(np.eye(3)) print(np.random.seed(0)) x1 = np.random.randint(10, size=6) #one dimension x2 = np.random.randint(10, size=(3,4)) #two dimension x3 = np.random.randint(10, size=(3,4,5)) #three dimension print(‘1d array’, x1) print(‘2d array’, x2) print(‘3d array’, x3) print("x3 ndim:", x3.ndim) print("x3 shape:", x3.shape) print("x3 size: ", x3.size) x = np.where(x1 == 4) print('Find the indexes where the value is 4:',x) print('after sorting array x1 ',np.sort(x1)) for i in x1:   print(i)   arr = np.concatenate((x2, x2), axis=1) print('After concatenating x2 and x2 arrays vertically', arr) newarr = np.array_split(arr, 3, axis=1) print(newarr) print('first elem...
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2333333

%{ #include<stdio.h> %} %% int|char|float|return { printf("\n%s=> Keywords",yytext);} #.* { printf("\n%s=>Preprocessor Directive",yytext);} printf|scanf|main { printf("\n%s=>functions",yytext);} ["][a-z]+["] { printf("\n%s=>Strings",yytext);} [[a-z]|[A-Z]][[a-z]|[A-Z]|[0-9]]+ { printf("\n%s=>Identifiers",yytext);} [0-9] { printf("\n%s=>Numbers",yytext);} "+"|"-"|"*"|"/"|"%" { printf("\n%s=>Operators",yytext);} ","|";"|"&"|"("|")"| [" ] |"{"|"}" { printf("\n%s=>Special Characters",yytext);} %% int main() { FILE *fp; fp=fopen("input.txt","r"); yyin=fp; yylex(); return 0; } int yywrap() { return 1; }
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