How to Fix 'TypeError: transform() missing 1 required positional argument: 'y'' in PyProj

If you're encountering the 'TypeError: transform() missing 1 required positional argument: 'y'' error while using the pyproj.transform() function, it's likely because you're not providing the 'x' and 'y' coordinates as separate arguments. The transform() function expects individual 'x' and 'y' values for the point you want to transform.

Here's the corrected Python code demonstrating the proper usage of pyproj.transform():

import pyproj
from shapely.geometry import Point

# Define the original point with its coordinates
x = 116.4074
y = 39.9042
point = Point(x, y)

# Define the original CRS (e.g., WGS84, EPSG:4326)
original_crs = pyproj.Proj('EPSG:4326')

# Define the desired CRS (e.g., UTM Zone 50N, EPSG:32650)
desired_crs = pyproj.Proj('EPSG:32650')

# Transform the point to the desired CRS
transformed_x, transformed_y = pyproj.transform(original_crs, desired_crs, x, y)
transformed_point = Point(transformed_x, transformed_y)

# Print the transformed point
print(transformed_point)

Explanation:

1. Import necessary libraries: We import pyproj for coordinate transformations and shapely.geometry.Point to represent points.
2. Define coordinates and point: We define the 'x' and 'y' coordinates and create a Point object.
3. Define CRSs: We define the original and desired coordinate reference systems using their EPSG codes.
4. Perform transformation: We use pyproj.transform() with separate 'x' and 'y' arguments to get the transformed coordinates.
5. Create transformed point: We create a new Point object using the transformed coordinates.

This corrected code should resolve the 'TypeError' and accurately transform your point to the desired coordinate reference system.