simple_joins.py

import ee 
import geemap

# Create a map centered at (lat, lon).
Map = geemap.Map(center=[40, -100], zoom=4)

# Load a Landsat 8 image collection at a point of interest.
collection = ee.ImageCollection('LANDSAT/LC08/C01/T1_TOA') \
    .filterBounds(ee.Geometry.Point(-122.09, 37.42))

# Define start and end dates with which to filter the collections.
april = '2014-04-01'
may = '2014-05-01'
june = '2014-06-01'
july = '2014-07-01'

# The primary collection is Landsat images from April to June.
primary = collection.filterDate(april, june)

# The secondary collection is Landsat images from May to July.
secondary = collection.filterDate(may, july)

# Use an equals filter to define how the collections match.
filter = ee.Filter.equals(**{
  'leftField': 'system:index',
  'rightField': 'system:index'
})

# Create the join.
simpleJoin = ee.Join.simple()

# Apply the join.
simpleJoined = simpleJoin.apply(primary, secondary, filter)

# Display the result.
print('Simple join: ', simpleJoined.getInfo())


# Display the map.
Map