Sometimes, we want to rename a file using Python.
In this article, we’ll look at how to rename a file using Python.
To rename a file using Python, we can use the os.rename method.
For instance, we write
import os
os.rename('a.txt', 'b.kml')
to rename a.txt to b.kml with os.rename.
To rename a file using Python, we can use the os.rename method.
Sometimes, we want to create a simple prime number generator in Python.
In this article, we’ll look at how to create a simple prime number generator in Python.
To create a simple prime number generator in Python, we can create a loop that checks each number being looped through is a prime.
For instance, we write
import math
def main():
count = 3
while True:
isprime = True
for x in range(2, int(math.sqrt(count) + 1)):
if count % x == 0:
isprime = False
break
if isprime:
print(count)
count += 1
to create the main function that has a while loop that loops from 2 to the square root of count plus 1 rounded to the nearest integer.
Then we divide count by x and get remainder 0, we know count isn’t a prime.
And we set isprime to False and break the while loop.
Then we print the count if count is a prime.
At the end of the loop iteration, we increment count by 1.
To create a simple prime number generator in Python, we can create a loop that checks each number being looped through is a prime.
Sometimes, we want to fix JSONDecodeError: Expecting value: line 1 column 1 (char 0) with Python.
In this article, we’ll look at how to fix JSONDecodeError: Expecting value: line 1 column 1 (char 0) with Python.
To fix JSONDecodeError: Expecting value: line 1 column 1 (char 0) with Python, we can put the code that parse the JSON string in the try block.
For instance, we write
import requests
# ...
def make_request(url):
response = requests.get(url)
try:
return response.json()
except ValueError:
# ...
to make a GET request with requests.get to url.
Then we put the response.json call in the try block to catch the ValueError that’s raised if response has invalid JSON.
To fix JSONDecodeError: Expecting value: line 1 column 1 (char 0) with Python, we can put the code that parse the JSON string in the try block.
Sometimes, we want to find full path of the Python interpreter.
In this article, we’ll look at how to find full path of the Python interpreter.
To find full path of the Python interpreter, we can use the sys.executable property.
For instance, we write
import sys
print(sys.executable)
to print the full path of the Python interpreter.
To find full path of the Python interpreter, we can use the sys.executable property.
Sometimes, we want to run functions in parallel with Python.
In this article, we’ll look at how to run functions in parallel with Python.
To run functions in parallel with Python, we can use the Process class.
For instance, we write
from multiprocessing import Process
def func1():
print("func1: starting")
for i in xrange(10000000):
pass
print("func1: finishing")
def func2():
print("func2: starting")
for i in xrange(10000000):
pass
print("func2: finishing")
if __name__ == "__main__":
p1 = Process(target=func1)
p1.start()
p2 = Process(target=func2)
p2.start()
p1.join()
p2.join()
to create 2 functions func1 and func2.
Then we create Process objects that runs these functions when we start them.
Next, we call start on each Process object to start the processes.
Then we use the join method to block the execution of the main process until the process whose join is called terminates.
To run functions in parallel with Python, we can use the Process class.