Q:

Python program to read character till a count

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mahmoud2506
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2022-05-20
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To read characters from file till a specific character count from the current pointer position, we will use read() method and pass the count as parameter.

To get back to the starting position, we will use seek() method.

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mahmoud2506
2022-05-20
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Program to read data from file till a specific position

# Python program to read character till a count

# main function
def main():
    # opening the file in read mode.
    file = open("data.txt","r")

    # printing file name 
    print("Name of the File : ",file.name)

    # reading 10 characers 
    String = file.read(10)
    print("Read String is till 10       : ",String)
    position = file.tell()
    print("Current Position             : ",position)
    String =file.read(10)
    print("Read String is till next 10  : ",String)
    position = file.tell()
    print("Current Position             : ",position)
    print()
    print("Sending Pointer back to Top")
    position = file.seek(0,0)
    print("Current Position             : ",position)
    String =file.read(25)
    print("Read String is till 25       : ",String)
    position = file.tell()
    print("Current Position             : ",position)

    file.close()

if __name__=="__main__":main()

File : File.dat

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Output:

Name of the File :  data.txt
Read String is till 10       :  learn pyth
Current Position             :  10
Read String is till next 10  :  on program
Current Position             :  20

Sending Pointer back to Top
Current Position             :  0
Read String is till 25       :  learn python programming 
Current Position             :  25

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