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()
python write to file
path = "guide/README.txt" # The path of your file should go here with open(path, "w") as fil: # Opens the file using 'w' method. See below for list of methods. fil.write("This is the README. It is reccomended that you read it.") # Writes to the file used .write() method fil.close() # Closes file ''' List of methods: w* - replace everything with needed text r^ - read the file a* - adds to file x - creates file * Creates file if the file at that path does not exist ^ Throws error if file does not exist '''
python file open
#there are many modes you can open files in. r means read. file = open('C:Usersyournamefilesfile.txt','r') text = file.read() #you can write a string to it, too! file = open('C:Usersyournamefilesfile.txt','w') file.write('This is a typical string') #don't forget to close it afterwards! file.close()
python functions list
def all(iterable): for element in iterable: if not element: return False return True
len python 3
len(list) # returns the length of a list, tuple, string, etc.
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