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How to use prepend_line method in Slash

Best Python code snippet using slash

update_env_file.py

Source:update_env_file.py

1from utils import get_inventory, get_service_fqdn, get_db_fqdn, remove_line_from_file2import sys3def prepend_line(path, line):4    file = open(path, "r+")5    content = file.read()6    file.seek(0,0)7    file.write(line.rstrip('\r\n') + '\n' + content)8def replace_host_ip_line(fqdn, env_file_path):9    # Remove exisiting line10    export_text = 'export HOST_IP'11    # remove_line_from_file(env_file_path, f"{export_text}=")12    remove_line_from_file(env_file_path, "{}=".format(export_text))13    # Add in new line, assigning the fqdn14    # host_ip_export_line = f"{export_text}={fqdn}"15    host_ip_export_line = "{}={}".format(export_text, fqdn)16    prepend_line(env_file_path, host_ip_export_line)17    18def replace_db_host_ip_line(fqdn, env_file_path):19    # Remove existing line20    existing_line = 'DB_HOST_IP=$HOST_IP'21    remove_line_from_file(env_file_path, existing_line)22    # We're also going to remove a line that might previously have been added by this script23    new_line = 'export DB_HOST_IP='24    remove_line_from_file(env_file_path, new_line)25    # Add in new line, assigning the fqdn26    export_text = 'export DB_HOST_IP'27    # host_ip_export_line = f"{export_text}={fqdn}"28    host_ip_export_line = "{}={}".format(export_text, fqdn)29    prepend_line(env_file_path, host_ip_export_line)30def set_db_ports(env_file_path):31    port='3306'32    line="export STROOM_DB_PORT=" 33    remove_line_from_file(env_file_path, line)34    prepend_line(env_file_path, line + port)35    line="export STROOM_STATS_DB_PORT=" 36    remove_line_from_file(env_file_path, line)37    prepend_line(env_file_path, line + port)38    line="export STROOM_AUTH_DB_PORT=" 39    remove_line_from_file(env_file_path, line)40    prepend_line(env_file_path, line + port)41    42def main():43    path_to_stack = sys.argv[1]44    # env_file_path = f"{path_to_stack}/latest/config/stroom_core.env"45    env_file_path = "{}/latest/config/stroom_core.env".format(path_to_stack)46    inventory = get_inventory()47    fqdn = get_service_fqdn(inventory)48    db_fqdn = get_db_fqdn(inventory)49    set_db_ports(env_file_path)50    replace_host_ip_line(fqdn, env_file_path)51    replace_db_host_ip_line(db_fqdn, env_file_path)...

cisco_parser.py

Source:cisco_parser.py

...25standardize_intfs(parse)26parse.commit()     # commit() **must** be called before searching again27## regular expression usage in has_line_with() to find if the config has a matching line28if not parse.has_line_with(r'^service\stimestamp'):29    ## prepend_line() adds a line at the top of the configuration30    parse.prepend_line('service timestamps debug datetime msec localtime show-timezone')31    parse.prepend_line('service timestamps log datetime msec localtime show-timezone')32parse.prepend_line('! -- Micah Raabe -- !')33## Write the new configuration...

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