Answers for "read() python"

python with file.open

# Reference https://docs.python.org/3/library/functions.html#open

# Method 1
file = open("welcome.txt", "r") # mode can be r(read) w(write) and others 
data = file.read()
file.close()

# Method 2 - automatic close
with open("welcome.txt") as infile:
  data = file.read()

read function in python

Syntax: file.read(fd, n)

Parameter:
fd: A file descriptor representing the file to be read.
n: Optional. An integer value denoting the number of bytes to be read from the file associated with the given file descriptor fd.
   The number of bytes to return. Default -1, which means the whole file.

Return Type: This method returns a bytestring which represents the bytes read from the file associated with the file descriptor fd.

with open as file python

>>> with open('workfile') as f:
...     read_data = f.read()

>>> # We can check that the file has been automatically closed.
>>> f.closed
True