Writing text files allows you to store data permanently in a file.
It is useful for saving reports, logs, user data, and program results.<\/p>\n\n\n\n
Python provides simple methods to create and write data into text files.<\/p>\n\n\n\n
To write into a file, use the \u2022 After writing, always close the file.<\/p>\n\n\n\n The This is the recommended way to handle files.<\/p>\n\n\n\n If you don\u2019t want to overwrite the file, use append mode Append mode adds content at the end of the file.<\/p>\n\n\n\n \u2022 \u2022 Write mode overwrites existing content \u2022 Save program output Understanding how to write text files is a key skill for building practical Python applications.<\/p>\n\n\nopen()<\/code> function with write mode.<\/p>\n\n\n\nfile = open(\"example.txt\", \"w\")<\/pre>\n\n\n\n
\"w\"<\/code> \u2192 Write mode (creates a new file or overwrites existing file)<\/p>\n\n\n\nfile.write(\"Hello Python\")
file.close()<\/pre>\n\n\n\nUSING WITH STATEMENT (BEST PRACTICE)<\/strong><\/h1>\n\n\n\n
with<\/code> statement automatically closes the file after writing.<\/p>\n\n\n\nwith open(\"example.txt\", \"w\") as file:
file.write(\"Welcome to Python programming.\")<\/pre>\n\n\n\nWRITING MULTIPLE LINES<\/strong><\/h1>\n\n\n\n
with open(\"example.txt\", \"w\") as file:
file.write(\"Line 1\\n\")
file.write(\"Line 2\\n\")
file.write(\"Line 3\\n\")<\/pre>\n\n\n\n\\n<\/code> adds a new line.<\/p>\n\n\n\nAPPEND MODE<\/strong><\/h1>\n\n\n\n
\"a\"<\/code>.<\/p>\n\n\n\nwith open(\"example.txt\", \"a\") as file:
file.write(\"This line is added later.\\n\")<\/pre>\n\n\n\nWRITING A LIST TO A FILE<\/strong><\/h1>\n\n\n\n
lines = [\"Apple\\n\", \"Banana\\n\", \"Mango\\n\"]with open(\"fruits.txt\", \"w\") as file:
file.writelines(lines)<\/pre>\n\n\n\nwritelines()<\/code> writes multiple lines at once.<\/p>\n\n\n\nFILE MODES SUMMARY<\/strong><\/h1>\n\n\n\n
\"w\"<\/code> \u2192 Write (overwrite file)
\u2022 \"a\"<\/code> \u2192 Append (add to file)
\u2022 \"x\"<\/code> \u2192 Create new file (error if exists)
\u2022 \"r+\"<\/code> \u2192 Read and write<\/p>\n\n\n\nHANDLING ERRORS<\/strong><\/h1>\n\n\n\n
try:
with open(\"example.txt\", \"w\") as file:
file.write(\"Data saved successfully.\")
except Exception as e:
print(\"An error occurred:\", e)<\/pre>\n\n\n\nIMPORTANT POINTS<\/strong><\/h1>\n\n\n\n
\u2022 Append mode keeps old content
\u2022 Always use with<\/code> for safe file handling
\u2022 Use \\n<\/code> for new lines<\/p>\n\n\n\nWHY WRITING FILES IS IMPORTANT<\/strong><\/h1>\n\n\n\n
\u2022 Store user data
\u2022 Create reports and logs
\u2022 Essential for automation and data processing<\/p>\n\n\n\n